Automatic merge from submit-queue
Remove all MAINTAINER statements in the codebase as they are deprecated
**What this PR does / why we need it**:
ref: https://github.com/docker/docker/pull/25466
**Release note**:
```release-note
Remove all MAINTAINER statements in Dockerfiles in the codebase as they are deprecated by docker
```
@ixdy @thockin (who else should be notified?)
Automatic merge from submit-queue
Fixed gcloud command in logs-generator makefile
I grepped through the code looking for `gcloud` and `push` commands and only found one Makefile missing the `--`. I added it.
fixes#33765🐛