Add list AMIs command to clusterawsadm

[sedefsavas]

/kind feature

What this PR does / why we need it:
This PR adds a list command to clusterawsadm to list AMIs based on OS, region, and Kubernetes version.

clusterawsadm ami list --kubernetes-version=v1.18.12 --os=ubuntu-20.04 --region=us-west-2

If none of the flags are used (clusterawsadm ami list), lists AMIs in all supported regions, OSes, and supported Kubernetes versions (N-2).

Example output:

$ clusterawsadm ami list --kubernetes-version=v1.19.3 -o json
{
  "AMIs": [
    {
      "os": "centos-7",
      "region": "ap-northeast-1",
      "amiID": "ami-08cc1e47b38d69085",
      "creationDate": "2020-11-14T21:33:51.000Z",
      "kubernetesVersion": "v1.19.3",
      "name": "capa-ami-centos-7-1.19.3-00-1605388645"
    },
    {
      "os": "ubuntu-18.04",
      "region": "ap-northeast-1",
      "amiID": "ami-006d394ac4256d33f",
      "creationDate": "2020-11-14T21:31:13.000Z",
      "kubernetesVersion": "v1.19.3",
      "name": "capa-ami-ubuntu-18.04-1.19.3-00-1605388698"
    },
 ],
}


$ clusterawsadm ami list --os=ubuntu-20.04 --region=us-west-2 -o table    
KUBERNETES-VERSION   REGION      OS             NAME                                          AMI-ID
v1.20.5              us-west-2   ubuntu-20.04   capa-ami-ubuntu-20.04-1.20.5-00-1616559327    ami-0d113dce59b31b889
v1.19.9              us-west-2   ubuntu-20.04   capa-ami-ubuntu-20.04-1.19.9-00-1616561685    ami-08d2e02e495ee1f75
v1.18.17             us-west-2   ubuntu-20.04   capa-ami-ubuntu-20.04-1.18.17-00-1616561896   ami-07ade7df8dc883555

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #2040

Special notes for your reviewer:

Checklist:

• squashed commits
• includes documentation
• adds unit tests
• adds or updates e2e tests

Add `clusterawsadm ami list` command to list AMIs that can be filtered by region, OS, and Kubernetes version.

[randomvariable]

The programmatic output doesn't really work if i run -o json

------------------------------------
KUBERNETES VERSION:  v1.20.5:
------------------------------------
{"kind":"Table","apiVersion":"meta.k8s.io/v1","metadata":{},"columnDefinitions":[{"name":"OS","type":"string","format":"","description":"","priority":0},{"name":"REGION","type":"string","format":"","description":"","priority":0},{"name":"AMI-ID","type":"string","format":"","description":"","priority":0}],"rows":[{"cells":["centos-7","ap-northeast-1","ami-03424c0440ed87374"],"object":null},{"cells":["centos-7","ap-northeast-2","ami-041b503198fa744e0"],"object":null},{"cells":["centos-7","ap-south-1","ami-06efc29cae4029c49"],"object":null},{"cells":["centos-7","ap-southeast-1","ami-0b51079f8bd6a2d39"],"object":null},{"cells":["centos-7","ap-northeast-2","ami-041b503198fa744e0"],"object":null},{"cells":["centos-7","ca-central-1","ami-067365ee1ab88c9bc"],"object":null},{"cells":["centos-7","eu-central-1","ami-001e143e0a7ac2eb2"],"object":null},{"cells":["centos-7","eu-west-1","ami-00c0cef018ca8cfa0"],"object":null},{"cells":["centos-7","eu-west-2","ami-094c7d76bacb3d5d2"],"object":null},{"cells":["centos-7","eu-west-3","ami-094aa699bf305f493"],"object":null},{"cells":["centos-7","sa-east-1","ami-0cd3ae610d0e7d50d"],"object":null},{"cells":["centos-7","us-east-1","ami-05e3ef28c5b540f9a"],"object":null},{"cells":["centos-7","us-east-2","ami-065544363881aca0d"],"object":null},{"cells":["centos-7","us-west-1","ami-09f6a4223114a69ed"],"object":null},{"cells":["centos-7","us-west-2","ami-0a2c2f95723c814d2"],"object":null},{"cells":["ubuntu-18.04","ap-northeast-1","ami-0e81ffe47c24b0507"],"object":null},{"cells":["ubuntu-18.04","ap-northeast-2","ami-017ce6ff84974d47f"],"object":null},{"cells":["ubuntu-18.04","ap-south-1","ami-0751f7b7235180361"],"object":null},{"cells":["ubuntu-18.04","ap-southeast-1","ami-0d861a9fa4d6dd9ce"],"object":null},{"cells":["ubuntu-18.04","ap-northeast-2","ami-017ce6ff84974d47f"],"object":null},{"cells":["ubuntu-18.04","ca-central-1","ami-0524e733a55d5eaef"],"object":null},{"cells":["ubuntu-18.04","eu-central-1","ami-0b6d4adee70d844b8"],"object":null},{"cells":["ubuntu-18.04","eu-west-1","ami-0c993941a087cf441"],"object":null},{"cells":["ubuntu-18.04","eu-west-2","ami-0a2d8123bc164f0bf"],"object":null},{"cells":["ubuntu-18.04","eu-west-3","ami-0bf88f9f752728b91"],"object":null},{"cells":["ubuntu-18.04","sa-east-1","ami-0205692a2ad5af511"],"object":null},{"cells":["ubuntu-18.04","us-east-1","ami-0c30e629d1dc49976"],"object":null},{"cells":["ubuntu-18.04","us-east-2","ami-0ffff56df5ee51ee1"],"object":null},{"cells":["ubuntu-18.04","us-west-1","ami-0cf1339fbdfa78f4a"],"object":null},{"cells":["ubuntu-18.04","us-west-2","ami-01277762e90a230f6"],"object":null},{"cells":["ubuntu-20.04","ap-northeast-1","ami-0cae4eb5ecafd4cf0"],"object":null},{"cells":["ubuntu-20.04","ap-northeast-2","ami-0ae4033c1c93e046a"],"object":null},{"cells":["ubuntu-20.04","ap-south-1","ami-01a799db01860f703"],"object":null},{"cells":["ubuntu-20.04","ap-southeast-1","ami-0c863e6be52760a14"],"object":null},{"cells":["ubuntu-20.04","ap-northeast-2","ami-0ae4033c1c93e046a"],"object":null},{"cells":["ubuntu-20.04","ca-central-1","ami-01f7acf2ea7f87330"],"object":null},{"cells":["ubuntu-20.04","eu-central-1","ami-0af6931ba94a5cf7a"],"object":null},{"cells":["ubuntu-20.04","eu-west-1","ami-0e896f9cc998184b6"],"object":null},{"cells":["ubuntu-20.04","eu-west-2","ami-07c467c9bfbcae6c5"],"object":null},{"cells":["ubuntu-20.04","eu-west-3","ami-06096520db23370ec"],"object":null},{"cells":["ubuntu-20.04","sa-east-1","ami-0b4d6bca29cdf1ad1"],"object":null},{"cells":["ubuntu-20.04","us-east-1","ami-0cb706f5d97e6873c"],"object":null},{"cells":["ubuntu-20.04","us-east-2","ami-0a823215d96a2c94d"],"object":null},{"cells":["ubuntu-20.04","us-west-1","ami-04bbb45feae84cb40"],"object":null},{"cells":["ubuntu-20.04","us-west-2","ami-0d113dce59b31b889"],"object":null},{"cells":["amazon-2","ap-northeast-1","ami-0c8314f66ad119184"],"object":null},{"cells":["amazon-2","ap-northeast-2","ami-0bde38bdb2f8f93d8"],"object":null},{"cells":["amazon-2","ap-south-1","ami-0faf81c8dfac5f689"],"object":null},{"cells":["amazon-2","ap-southeast-1","ami-0e1eb33e49df3010a"],"object":null},{"cells":["amazon-2","ap-northeast-2","ami-0bde38bdb2f8f93d8"],"object":null},{"cells":["amazon-2","ca-central-1","ami-00cb6811a62ad4c41"],"object":null},{"cells":["amazon-2","eu-central-1","ami-09c26841321b3fcd6"],"object":null},{"cells":["amazon-2","eu-west-1","ami-0412a962d8c9d06db"],"object":null},{"cells":["amazon-2","eu-west-2","ami-0c02411386619ac9e"],"object":null},{"cells":["amazon-2","eu-west-3","ami-0fd6d38607dba3d1d"],"object":null},{"cells":["amazon-2","sa-east-1","ami-0962b6943266ed666"],"object":null},{"cells":["amazon-2","us-east-1","ami-0c8e9685202d2f054"],"object":null},{"cells":["amazon-2","us-east-2","ami-085b7748147d02c89"],"object":null},{"cells":["amazon-2","us-west-1","ami-0aeb399d1172ac1f2"],"object":null},{"cells":["amazon-2","us-west-2","ami-00fef67d63ca399b0"],"object":null}]}^Csignal: interrupt

First of all, the header isn't JSON and will break consumers, and then probably don't want the Table output as JSON

I'd probably want an array of AMIs, like

[
  {
    "amiID": "ami-0b4a11b337f543a7a",
     "name":  "capa-ami-amazon-2-1.19.9-00-1616561545",
     "creationDate": "2021-03-24T05:01:45.000Z"
     "kubernetesVersion": "v1.19.9"
  },
...
]

Given that the API call is super slow and expensive, it's probably quicker to fetch all AMIs owned by the account, and sort in memory.

The output also needs deduping, with duplicate AMIs shown.
Finally, for a given Kubernetes version, we may build an AMI more than once, say for example to address a kernel CVE. In this case, I want to know which is the more recent AMI. Displaying the full name of the AMI as well as the date of registration will be helpful here.

I would remove the big

------------------------------------
KUBERNETES VERSION:  v1.20.5:
------------------------------------

header, given that there is a flag that allows the user to filter on the version anyway.

Instead, give the user a deduped, sorted list, sorted by:

Kubernetes version (descending)
For each Kubernetes version, sort by region, show only latest AMI for that region.

[randomvariable]

/lgtm
/approve

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