Automatic merge from submit-queue (batch tested with PRs 50300, 50328, 50368, 50370, 50372)

Bugfix: set resources only for fluentd-gcp container.

There is more than one container in fluentd-gcp deployment. Previous
implementation was setting resources for all containers, not just
the fluent-gcp one.

**What this PR does / why we need it**:

Bugfix; https://github.com/kubernetes/kubernetes/pull/49009 without this is eating more resources.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #50366

**Special notes for your reviewer**:

**Release note**:
```release-note
NONE
```