pkg: Pin to RHCOS 47.198 and quay.io/openshift-release-dev/ocp-releas…

…e:4.0.0-4

That's the latest RHCOS release:

  $ curl -s https://releases-rhcos.svc.ci.openshift.org/storage/releases/maipo/builds.json | jq '{latest: .builds[0], timestamp}'
  {
    "latest": "47.198",
    "timestamp": "2018-12-08T23:13:22Z"
  }

And Clayton just pushed 4.0.0-alpha.0-2018-12-07-090414
quay.io/openshift-release-dev/ocp-release:4.0.0-4.  That's not the
most recent release, but it's the most-recent stable release ;).

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).

pkg/asset/ignition/bootstrap/bootstrap.go

@@ -30,7 +30,7 @@ import (
 
 const (
  rootDir = "/opt/openshift"
- defaultReleaseImage = "registry.svc.ci.openshift.org/openshift/origin-release:v4.0"
+ defaultReleaseImage = "quay.io/openshift-release-dev/ocp-release:4.0.0-4"
  bootstrapIgnFilename = "bootstrap.ign"
 )
 
@@ -141,7 +141,7 @@ func (a *Bootstrap) getTemplateData(installConfig *types.InstallConfig, adminKub
  }
 
  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/rhcos/builds.go

@@ -33,9 +33,15 @@ type metadata struct {
 }
 
 func fetchLatestMetadata(ctx context.Context, channel string) (metadata, error) {
- build, err := fetchLatestBuild(ctx, channel)
- if err != nil {
- return metadata{}, errors.Wrap(err, "failed to fetch latest build")
+ var build string
+ var err error
+ if channel == DefaultChannel {
+ build = "47.165"
+ } else {
+ build, err = fetchLatestBuild(ctx, channel)
+ if err != nil {
+ return metadata{}, errors.Wrap(err, "failed to fetch latest build")
+ }
  }
 
  url := fmt.Sprintf("%s/%s/%s/meta.json", baseURL, channel, build)