This scopes down the initially ambitious PR:
https://github.com/kubernetes/kubernetes/pull/14960 to replace just
`pause` and `fluentd-elasticsearch` to come through `beta.gcr.io`.

The v2 versions have been pushed under new tags, `pause:2.0` and
`fluentd-elastisearch:1.12`.

NOTE: `beta.gcr.io` will still serve images using v1 until they are repushed with v2.  Pulls through `gcr.io` will still work after pushing through `beta.gcr.io`, but will be served over v1 (via compat logic).