Add Google Container Registry to KubernetesCluster

Allow access to Google Container Registry using json key as
a password for docker login. The key is scoped to a specific
Google Cloud Platform Console project and its resources.
Add new field for key.

Partially implements: blueprint k8s-google-registry-support

Change-Id: Ica71d1a48ac7fb75a71497fcbe318d1b9e4e8192

Kubernetes/KubernetesCluster/package/Classes/KubernetesCluster.yaml

@@ -53,6 +53,9 @@ Properties:
   dockerMirror:
     Contract: $.string()
 
+  gcloudKey:
+    Contract: $.string()
+
   serviceEndpoints:
     Contract:
       - port: $.int().notNull().check($ > 0)

Kubernetes/KubernetesCluster/package/Classes/KubernetesMinionNode.yaml

@@ -85,7 +85,8 @@ Methods:
                 ip => $.getIp(),
                 masterIp => $._cluster.masterNode.getIp(),
                 dockerRegistry => $._cluster.dockerRegistry,
-                dockerMirror => $._cluster.dockerMirror
+                dockerMirror => $._cluster.dockerMirror,
+                gcloudKey => $._cluster.gcloudKey
               ))
           - $.instance.agent.call($template, $resources)
           - $.setAttr(nodeConfigured, true)

Kubernetes/KubernetesCluster/package/Resources/KubeMinionSetup.template

@@ -20,12 +20,15 @@ Parameters:
   masterIp: $masterIp
   dockerRegistry: $dockerRegistry
   dockerMirror: $dockerMirror
+  gcloudKey: $gcloudKey
 
 Body: |
   if args.dockerRegistry:
     setupRegistry(args.dockerRegistry)
   if args.dockerMirror:
     setupMirror(args.dockerMirror)
+  if args.gcloudKey:
+    loginToGoogleRegistry("'{0}'".format(args.gcloudKey))
   restartDocker()
   setup('{0} {1} {2}'.format(args.name, args.ip, args.masterIp))
 
@@ -64,6 +67,15 @@ Scripts:
       captureStdout: true
       captureStderr: true
 
+  loginToGoogleRegistry:
+    Type: Application
+    Version: 1.0.0
+    EntryPoint: loginToGoogleRegistry.sh
+    Files: []
+    Options:
+      captureStdout: true
+      captureStderr: true
+
   restartDocker:
     Type: Application
     Version: 1.0.0

Kubernetes/KubernetesCluster/package/Resources/scripts/loginToGoogleRegistry.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+docker login -e unused@arg.com -u _json_key -p "$1" https://gcr.io

Kubernetes/KubernetesCluster/package/UI/ui.yaml

@@ -64,6 +64,7 @@ Application:
   gatewayNodes: repeat($gatewayNode, $.appConfiguration.maxGatewayCount)
   dockerRegistry: $.appConfiguration.dockerRegistry
   dockerMirror: $.appConfiguration.dockerMirror
+  gcloudKey: $.appConfiguration.gcloudKey
 
 
 Forms:
@@ -175,6 +176,16 @@ Forms:
             URL of Docker registry mirror to use.
             Leave empty to not use one.
           required: false
+        - name: gcloudKey
+          type: string
+          label: Google registry key
+          regexpValidator: '^{(\s*"(\\(["\\\/bfnrt]|u[a-fA-F0-9]{4})|[^"\\\0-\x1F\x7F]+)*"\s*:\s*"(\\(["\\\/bfnrt]|u[a-fA-F0-9]{4})|[^"\\\0-\x1F\x7F]+)*"\s*(,|\s*}$))*$'
+          errorMessages:
+            invalid: Text should be a valid JSON.
+          description: >-
+            Contents of JSON key file.
+            Used to authenticate to the Google Container Registry
+          required: false
 
   - instanceConfiguration:
       fields: