Support Out-of-Tree GCE Cloud Provider

[andrewsykim]

Enhancement Description

• One-line enhancement description (can be used as a release note):
  Support Out-of-Tree GCP Cloud Provider by running the cloud-controller-manager
• Primary contact (assignee):
  @cheftako @jagosan
• Responsible SIGs:
  SIG GCP, SIG Cloud Provider
• Reviewer(s) - (for LGTM) recommend having 2+ reviewers (at least one from code-area OWNERS file) agreed to review. Reviewers from multiple companies preferred:
  @cheftako @jagosan @andrewsykim
• Approver (likely from SIG/area to which enhancement belongs):
  @cheftako @jagosan @andrewsykim
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y)
  • Beta release target (x.y)
  • Stable release target (x.y)

Ref #88

/sig gcp cloud-provider

[andrewsykim]

@cheftako @fedebongio @jagosan can you set a stage target for this issue for v1.14 please?

[cheftako]

Targeting an alpha release for 1.14

[cheftako]

/milestone v1.14

[k8s-ci-robot]

@cheftako: You must be a member of the kubernetes/kubernetes-milestone-maintainers GitHub team to set the milestone. If you believe you should be able to issue the /milestone command, please contact your and have them propose you as an additional delegate for this responsibility.

In response to this:

/milestone v1.14

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[andrewsykim]

Thanks @cheftako!!!

/milestone v1.14

[lledru]

Hello, i'm one of the 1.14 release enhancements shadow, tomorrow enhancement freeze occurs and we still need a KEP. Otherwise you will be asked to fill in an exception. Could you provide one ? Thanks

[andrewsykim]

@lledru I'll have PR for this today, thanks for the ping!

[andrewsykim]

FYI put together the boiler plate for this KEP here #735