Pod errors: ImagePullBackOff

[lei-tang]

1. Description of the issue:
   When running the example in https://cloud.google.com/endpoints/docs/get-started-container-engine#node, the container engine cluster for esp encounters pod errors: ImagePullBackOff.

2. The cause of the problem
   This problem is caused by the following line in nodejs-docs-samples/endpoints/getting-started/container-engine.yaml:
   image: b.gcr.io/endpoints/endpoints-runtime:0.3
   The container registry b.gcr.io has been deprecated, thereby causing the problem of running the image.

3. Fix for the problem
   Change the following line in nodejs-docs-samples/endpoints/getting-started/container-engine.yaml from "image: b.gcr.io/endpoints/endpoints-runtime:0.3" to "image: gcr.io/endpoints-release/endpoints-runtime:1".

[lei-tang]

#482 is the pull request corresponding to the fix for this issue.

[JustinBeckwith]

👋 thanks for the issue! Based on the PR you provided, it looks like this has been fixed. If you're still running into issues... please do let us know!