hack/build: Pin to RHCOS 47.245 and quay.io/openshift-release-dev/ocp-release:4.0.0-9

That's almost the latest RHCOS release:

  $ curl -s https://releases-rhcos.svc.ci.openshift.org/storage/releases/maipo/builds.json | jq '{latest: .builds[0], timestamp}'
  {
    "latest": "47.246",
    "timestamp": "2019-01-05T23:11:19Z"
  }

I'm going with 47.245, because it's been selected as the likely build
for the next OpenShift release.

Clayton just pushed 4.0.0-0.alpha-2019-01-04-235315 to
quay.io/openshift-release-dev/ocp-release:4.0.0-9.

Renaming OPENSHIFT_INSTALL_RELEASE_IMAGE_OVERRIDE gets us CI testing
of the pinned release despite openshift/release@60007df2 (Use
RELEASE_IMAGE_LATEST for CVO payload, 2018-10-03,
openshift/release#1793).

Also comment out regions which this particular RHCOS build wasn't
pushed to, leaving only:

  $ curl -s https://releases-rhcos.svc.ci.openshift.org/storage/releases/maipo/47.246/meta.json | jq -r '.amis[] | .name'
  ap-northeast-1
  ap-northeast-2
  ap-south-1
  ap-southeast-1
  ap-southeast-2
  ca-central-1
  eu-central-1
  eu-west-1
  eu-west-2
  eu-west-3
  sa-east-1
  us-east-1
  us-east-2
  us-west-1
  us-west-2

I'd initially expected to export the pinning environment variables in
release.sh, but I've put them in build.sh here because our continuous
integration tests use build.sh directly and don't go through
release.sh.

Author: wking

hack/build.sh

@@ -2,6 +2,9 @@
 
 set -ex
 
+RELEASE_IMAGE="${RELEASE_IMAGE:-quay.io/openshift-release-dev/ocp-release:4.0.0-9}"
+RHCOS_BUILD_NAME="${RELEASE_BUILD_NAME:-47.245}"
+
 # shellcheck disable=SC2068
 version() { IFS="."; printf "%03d%03d%03d\\n" $@; unset IFS;}
 

pkg/asset/ignition/bootstrap/bootstrap.go

@@ -144,7 +144,7 @@ func (a *Bootstrap) getTemplateData(installConfig *types.InstallConfig) (*bootst
 	}
 
 	releaseImage := defaultReleaseImage
-	if ri, ok := os.LookupEnv("OPENSHIFT_INSTALL_RELEASE_IMAGE_OVERRIDE"); ok && ri != "" {
+	if ri, ok := os.LookupEnv("_OPENSHIFT_INSTALL_RELEASE_IMAGE_OVERRIDE"); ok && ri != "" {
 		logrus.Warn("Found override for ReleaseImage. Please be warned, this is not advised")
 		releaseImage = ri
 	}

pkg/types/aws/validation/platform.go

@@ -16,22 +16,22 @@ var (
 	Regions = map[string]string{
 		"ap-northeast-1": "Tokyo",
 		"ap-northeast-2": "Seoul",
-		"ap-northeast-3": "Osaka-Local",
+		//"ap-northeast-3": "Osaka-Local",
 		"ap-south-1":     "Mumbai",
 		"ap-southeast-1": "Singapore",
 		"ap-southeast-2": "Sydney",
 		"ca-central-1":   "Central",
-		"cn-north-1":     "Beijing",
-		"cn-northwest-1": "Ningxia",
-		"eu-central-1":   "Frankfurt",
-		"eu-west-1":      "Ireland",
-		"eu-west-2":      "London",
-		"eu-west-3":      "Paris",
-		"sa-east-1":      "São Paulo",
-		"us-east-1":      "N. Virginia",
-		"us-east-2":      "Ohio",
-		"us-west-1":      "N. California",
-		"us-west-2":      "Oregon",
+		//"cn-north-1":     "Beijing",
+		//"cn-northwest-1": "Ningxia",
+		"eu-central-1": "Frankfurt",
+		"eu-west-1":    "Ireland",
+		"eu-west-2":    "London",
+		"eu-west-3":    "Paris",
+		"sa-east-1":    "São Paulo",
+		"us-east-1":    "N. Virginia",
+		"us-east-2":    "Ohio",
+		"us-west-1":    "N. California",
+		"us-west-2":    "Oregon",
 	}
 
 	validRegionValues = func() []string {

pkg/types/validation/installconfig_test.go

@@ -217,7 +217,7 @@ func TestValidateInstallConfig(t *testing.T) {
 				}
 				return c
 			}(),
-			expectedError: `^platform\.aws\.region: Unsupported value: "": supported values: "ap-northeast-1", "ap-northeast-2", "ap-northeast-3", "ap-south-1", "ap-southeast-1", "ap-southeast-2", "ca-central-1", "cn-north-1", "cn-northwest-1", "eu-central-1", "eu-west-1", "eu-west-2", "eu-west-3", "sa-east-1", "us-east-1", "us-east-2", "us-west-1", "us-west-2"$`,
+			expectedError: `^platform\.aws\.region: Unsupported value: "": supported values: "ap-northeast-1", "ap-northeast-2", "ap-south-1", "ap-southeast-1", "ap-southeast-2", "ca-central-1", "eu-central-1", "eu-west-1", "eu-west-2", "eu-west-3", "sa-east-1", "us-east-1", "us-east-2", "us-west-1", "us-west-2"$`,
 		},
 		{
 			name: "valid libvirt platform",