Release artifacts MVP

[randomvariable]

What this PR does / why we need it:
Refactors the way manifests are generated so that provider components are generated by Bazel in line with the image.

make release-artifacts will generate a tar file with the manifest templates, shell script and getting started guide.

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 #578
Fixes #569,
Related to #549, #276, #122

Special notes for your reviewer:

E2E tests were rewired to make use of the artifact creation here, so that it tests the manifests generated by the tools we provide to the user. During that, made some changes to provide more logging information during the run. Can confirm no secrets are leaked by doing this.

Release note:

Sample manifests are now provided as a tar file with each release.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: randomvariable

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [randomvariable]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[randomvariable]

Back.

I'll need to rebase onto #573

[randomvariable]

Ready for review.

[randomvariable]

cc @detiber @chuckha @vincepri

Apologies for the size. Needed to unpick how manifests are generated and create separate pathways in bazel for release, dev, and e2e testing.

[chuckha]

This is great work. I think I need a little more time to digest, but initial pass is done

[randomvariable]

Cleaned this up a little more following @chuckha's recommendations.

[chuckha]

This looks good to me, I have one question and then will give it a day to see if anyone else has more feedback

[chuckha]

/lgtm

A+

[randomvariable]

/hold

[randomvariable]

/unhold

[randomvariable]

/hold cancel

[chuckha]

/lgtm

[k8s-ci-robot]

@randomvariable: The following test failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
pull-cluster-api-provider-aws-bazel-e2e	f195a26	link	/test pull-cluster-api-provider-aws-bazel-e2e

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.

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. I understand the commands that are listed here.