Add feature gate machinery

[geetikabatra]

Currently CAPG doesn't have capability of adding features via
feature gates. This change would add feature gate machinery.

Signed-off-by: Geetika Batra [email protected]

What type of PR is this?

What this PR does / why we need it:

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:

Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

TODOs:

• squashed commits
• includes documentation
• adds unit tests

Release note:

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[k8s-ci-robot]

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[geetikabatra]

Features gates are available in all the CAP* providers and would ultimately be required. For eg. #297 would require MachinePool support as a new feature.

[sayantani11]

@geetikabatra Can you add Adding features via feature gate or NONE in the release note section?

[k8s-triage-robot]

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/lifecycle stale

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
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/lifecycle rotten

[geetikabatra]

@sayantani11 sure

[sayantani11]

/release-note-none

[sayantani11]

/remove-lifecycle rotten

[sayantani11]

/ok-to-test

[sayantani11]

@geetikabatra The failed tests are linked please try looking into it

[sayantani11]

/retest

[k8s-ci-robot]

@geetikabatra: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-cluster-api-provider-gcp-verify	751ba43	link	true	/test pull-cluster-api-provider-gcp-verify

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[geetikabatra]

I don't have enough bandwidth to look into it. Hence closing it.