USHIFT-1513: update rebase to work with kube-storage-version-migrator

[dhellmann]

The rebase script had assumed that all image and git repo names would
match, but they do not when we bring something from upstream into a fork.
Add support for a "via" argument to the "release" instruction in go.mod to
specify the git repository name. Then add the kube-storage-version-migrator
to the components included when we rebase.

/assign @pmtk @eggfoobar

[openshift-ci-robot]

@dhellmann: This pull request references USHIFT-1513 which is a valid jira issue.

In response to this:

The rebase script had assumed that all image and git repo names would
match, but they do not when we bring something from upstream into a fork.
Add support for a "via" argument to the "release" instruction in go.mod to
specify the git repository name. Then add the kube-storage-version-migrator
to the components included when we rebase.

/assign @pmtk @eggfoobar

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[eggfoobar]

LGTM

I'll leave it to @pmtk to add the label.

Thanks for doing this @dhellmann !

[pmtk]

/retest

[pmtk]

/lgtm
/hold

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dhellmann, pmtk

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[pmtk]

/unhold