[must-gather] Rename dockerfile

[ashwindasr]

For openshift/must-gather#432

[openshift-ci-robot]

[REHEARSALNOTIFIER]
@ashwindasr: the pj-rehearse plugin accommodates running rehearsal tests for the changes in this PR. Expand 'Interacting with pj-rehearse' for usage details. The following rehearsable tests have been affected by this change:

Test name	Repo	Type	Reason
pull-ci-openshift-must-gather-master-e2e-aws	openshift/must-gather	presubmit	Ci-operator config changed
pull-ci-openshift-must-gather-master-images	openshift/must-gather	presubmit	Ci-operator config changed
pull-ci-openshift-must-gather-master-okd-scos-images	openshift/must-gather	presubmit	Ci-operator config changed

Prior to this PR being merged, you will need to either run and acknowledge or opt to skip these rehearsals.

Interacting with pj-rehearse

Comment: /pj-rehearse to run up to 5 rehearsals
Comment: /pj-rehearse skip to opt-out of rehearsals
Comment: /pj-rehearse {test-name}, with each test separated by a space, to run one or more specific rehearsals
Comment: /pj-rehearse more to run up to 10 rehearsals
Comment: /pj-rehearse max to run up to 25 rehearsals
Comment: /pj-rehearse auto-ack to run up to 5 rehearsals, and add the rehearsals-ack label on success
Comment: /pj-rehearse abort to abort all active rehearsals

Once you are satisfied with the results of the rehearsals, comment: /pj-rehearse ack to unblock merge. When the rehearsals-ack label is present on your PR, merge will no longer be blocked by rehearsals.
If you would like the rehearsals-ack label removed, comment: /pj-rehearse reject to re-block merging.

[soltysh]

/pj-rehearse auto-ack

[openshift-ci-robot]

@soltysh: now processing your pj-rehearse request. Please allow up to 10 minutes for jobs to trigger or cancel.

[openshift-ci]

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

Test name	Commit	Details	Required	Rerun command
ci/rehearse/openshift/must-gather/master/e2e-aws	e54e328	link	unknown	/pj-rehearse pull-ci-openshift-must-gather-master-e2e-aws
ci/rehearse/openshift/must-gather/master/images	e54e328	link	unknown	/pj-rehearse pull-ci-openshift-must-gather-master-images

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[soltysh]

/pj-rehearse skip
they will fail b/c we need openshift/must-gather#432, which relies on this PR, so it's chicken and egg problem.

[openshift-ci-robot]

@soltysh: now processing your pj-rehearse request. Please allow up to 10 minutes for jobs to trigger or cancel.

[soltysh]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ashwindasr, soltysh

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• ci-operator/config/openshift/must-gather/OWNERS [soltysh]

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