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cmd: cloud-controller-manager: remove golint_failures entry
**What this PR does / why we need it**:
`cmd/cloud-controller-manager/app` and `cmd/cloud-controller-manager/app/options` currently appear in `.golint_failures`. We can lint these packages.
`golint` emits the following two warnings
```
comment on exported type CloudControllerManagerServer should be of the form "CloudControllerManagerServer ..."
comment on exported const ControllerStartJitter should be of the form "ControllerStartJitter ..."
```
Fix the documentation comments and remove entries from `.golint_failures`
**Special notes for your reviewer**:
Don't know which sig to label this PR with?
**Release note**:
```release-note
NONE
```
/kind cleanup
fc6120cc48