🌱 hack: add script for creating mirror repo PRs

[neolit123]

What this PR does / why we need it:

Until the e2e CI is migrated to community infra, this script will be useful for all PR authors to create a PR in the mirror repo and run the CI there.

please suggest a better script name if needed.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):

NONE

[neolit123]

/cc @chrischdi

[neolit123]

/kind feature
/area test

[k8s-ci-robot]

@neolit123: The label(s) area/test cannot be applied, because the repository doesn't have them.

In response to this:

/kind feature
/area test

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[chrischdi]

one nit as of that lgtm

[chrischdi]

So it can be run when not inside the CAPV git directory

Suggested change

	--json headRepository,headRepositoryOwner,headRefName,baseRefName \
	-q '"https://github.com/team-cluster-api/cluster-api-provider-vsphere/compare/" \
	+ .baseRefName + "..." + .headRepositoryOwner.login + ":" + .headRepository.name + ":" + .headRefName'
	-R kubernetes-sigs/cluster-api-provider-vsphere \
	--json headRepository,headRepositoryOwner,headRefName,baseRefName \
	-q '"https://github.com/team-cluster-api/cluster-api-provider-vsphere/compare/" \
	+ .baseRefName + "..." + .headRepositoryOwner.login + ":" + .headRepository.name + ":" + .headRefName'

[neolit123]

updated.

[chrischdi]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 1f3bdd95acba17e77de41b02944a79b862572767

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: chrischdi

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