Adds Kind local cluster support with documentation

[cyriltovena]

Closes #448

This PR adds support for using Kind (Kubernetes IN docker) cluster and the installation documentation.

Kind is faster to install if you already have a go+docker environment, but also less trouble with virtualization like virtualbox or hyper-v.

if you want to take a full spin try :

make build-images kind-test-cluster kind-push kind-install kind-test-e2e

Should we look into using this for the CI ? or wait a bit ?

[agones-bot]

Build Succeeded 👏

Build Id: 9f669455-7a49-42c0-a544-c0b927b40521

The following development artifacts have been built, and will exist for the next 30 days:

• image: gcr.io/agones-images/agones-controller:0.7.0-88ba960
• image: gcr.io/agones-images/agones-sdk:0.7.0-88ba960
• image: gcr.io/agones-images/agones-ping:0.7.0-88ba960
• Linux C++ SDK (build: dev): agonessdk-0.7.0-88ba960-dev-linux-arch_64.tar.gz
• Linux C++ SDK (build: runtime): agonessdk-0.7.0-88ba960-runtime-linux-arch_64.tar.gz
• Linux C++ SDK (source): agonessdk-0.7.0-88ba960-src.zip
• SDK Server: agonessdk-server-0.7.0-88ba960.zip

To install this version:

• git fetch https://github.com/GoogleCloudPlatform/agones.git pull/458/head:pr_458 && git checkout pr_458
• helm install install/helm/agones --namespace agones-system --name agones --set agones.image.tag=0.7.0-88ba960

[markmandel]

A couple of small things - mainly around locking the version, but this is 🔥

Also got this working nicely with specific e2e tests within my IDE as well - worked nicely!

[agones-bot]

Build Succeeded 👏

Build Id: 625d98c9-b7a9-406e-b69e-210be0017694

The following development artifacts have been built, and will exist for the next 30 days:

• image: gcr.io/agones-images/agones-controller:0.7.0-a65e583
• image: gcr.io/agones-images/agones-sdk:0.7.0-a65e583
• image: gcr.io/agones-images/agones-ping:0.7.0-a65e583
• Linux C++ SDK (build: dev): agonessdk-0.7.0-a65e583-dev-linux-arch_64.tar.gz
• Linux C++ SDK (build: runtime): agonessdk-0.7.0-a65e583-runtime-linux-arch_64.tar.gz
• Linux C++ SDK (source): agonessdk-0.7.0-a65e583-src.zip
• SDK Server: agonessdk-server-0.7.0-a65e583.zip

To install this version:

• git fetch https://github.com/GoogleCloudPlatform/agones.git pull/458/head:pr_458 && git checkout pr_458
• helm install install/helm/agones --namespace agones-system --name agones --set agones.image.tag=0.7.0-a65e583

[agones-bot]

Build Succeeded 👏

Build Id: ce92b6b8-8312-4e4a-9a58-6612b16e3b8d

The following development artifacts have been built, and will exist for the next 30 days:

• image: gcr.io/agones-images/agones-controller:0.7.0-a74f5d1
• image: gcr.io/agones-images/agones-sdk:0.7.0-a74f5d1
• image: gcr.io/agones-images/agones-ping:0.7.0-a74f5d1
• Linux C++ SDK (build: dev): agonessdk-0.7.0-a74f5d1-dev-linux-arch_64.tar.gz
• Linux C++ SDK (build: runtime): agonessdk-0.7.0-a74f5d1-runtime-linux-arch_64.tar.gz
• Linux C++ SDK (source): agonessdk-0.7.0-a74f5d1-src.zip
• SDK Server: agonessdk-server-0.7.0-a74f5d1.zip

To install this version:

• git fetch https://github.com/GoogleCloudPlatform/agones.git pull/458/head:pr_458 && git checkout pr_458
• helm install install/helm/agones --namespace agones-system --name agones --set agones.image.tag=0.7.0-a74f5d1

[markmandel]

LGTM! 🗻