Automatic merge from submit-queue (batch tested with PRs 55910, 57757). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Add support for cloud-controller-manager in local-up-cluster.sh
**What this PR does / why we need it**:
We need an easy way to test the new external cloud provider. So
let's keep the existing CLOUD_PROVIDER and CLOUD_CONFIG as-is and
add a flag EXTERNAL_CLOUD_PROVIDER to run a separate process.
Since we use hyperkube to run controller-manager, let's add support
for cloud-controller-manager as well to support this use case.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```dev-release-note
Ability to run the cloud-controller-manager from local-up-cluster for easy testing
```
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