Add Amazon Linux 2 as supported OS

[dveeden]

What problem does this PR solve?

Mark Amazon Linux 2 as supported

• https://aws.amazon.com/blogs/startups/achieve-better-price-to-performance-for-tidb-graviton2-processors/
• https://aws.amazon.com/ec2/graviton/
• https://aws.amazon.com/amazon-linux-2/

Check List

Tests

• Manual test (add detailed scripts or steps below)

Release notes:

Amazon Linux is no longer marked as unsupported

$ cat /etc/os-release 
NAME="Amazon Linux"
VERSION="2"
ID="amzn"
ID_LIKE="centos rhel fedora"
VERSION_ID="2"
PRETTY_NAME="Amazon Linux 2"
ANSI_COLOR="0;33"
CPE_NAME="cpe:2.3:o:amazon:amazon_linux:2"
HOME_URL="https://amazonlinux.com/"

$ rpm -E %{rhel}
7

ip-**********.eu-central-1.compute.internal  os-version    Fail    os vendor amzn not supported

[ti-chi-bot]

[REVIEW NOTIFICATION]

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• AstroProfundis

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[codecov-commenter]

Codecov Report

Merging #1740 (dbde5d3) into master (4486823) will increase coverage by 21.50%.
The diff coverage is 0.00%.

❗ Current head dbde5d3 differs from pull request most recent head bbfe9c0. Consider uploading reports for the commit bbfe9c0 to get more accurate results

@@             Coverage Diff             @@
##           master    #1740       +/-   ##
===========================================
+ Coverage   24.42%   45.92%   +21.50%     
===========================================
  Files         277      303       +26     
  Lines       31461    34324     +2863     
===========================================
+ Hits         7682    15761     +8079     
+ Misses      22926    16689     -6237     
- Partials      853     1874     +1021     

Flag	Coverage Δ
cluster	29.66% <0.00%> (?)
dm	24.79% <0.00%> (?)
playground	12.73% <ø> (?)
tiup	14.53% <ø> (ø)
unittest	21.34% <ø> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/cluster/operation/check.go	0.00% <0.00%> (ø)
components/playground/instance/drainer.go	0.00% <0.00%> (ø)
components/playground/instance/tiflash_config.go	70.59% <0.00%> (ø)
pkg/logger/logger.go	100.00% <0.00%> (ø)
components/playground/instance/tikv_config.go	100.00% <0.00%> (ø)
components/dm/task/update_dm_meta.go	87.76% <0.00%> (ø)
components/playground/instance/ticdc.go	0.00% <0.00%> (ø)
pkg/cluster/operation/pd_member.go	0.00% <0.00%> (ø)
components/playground/instance/process.go	81.97% <0.00%> (ø)
pkg/cluster/operation/action.go	63.66% <0.00%> (ø)
... and 185 more

---

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[AstroProfundis]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: bbfe9c0

[yahonda]

Do we need to update https://docs.pingcap.com/tidb/stable/hardware-and-software-requirements to mention that 'Amazon Linux 2' is supported once the newer version of tiup released?

[dveeden]

Do we need to update https://docs.pingcap.com/tidb/stable/hardware-and-software-requirements to mention that 'Amazon Linux 2' is supported once the newer version of tiup released?

Yes: pingcap/docs#7473

[yahonda]

Thanks. I was not aware of that pull request.