Fix OperatorPolicy cleanup commands

[dhaiducek]

Followup to:

• Add tests for installing a specific operator via OperatorPolicy #736

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dhaiducek, gparvin, mprahl

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• OWNERS [dhaiducek,gparvin,mprahl]

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[zyjjay]

/cherry-pick release-2.10

[openshift-cherrypick-robot]

@zyjjay: #743 failed to apply on top of branch "release-2.10":

Applying: Specify full path for Operator subscription
Using index info to reconstruct a base tree...
A	test/integration/policy_install_operator_test.go
Falling back to patching base and 3-way merge...
CONFLICT (modify/delete): test/integration/policy_install_operator_test.go deleted in HEAD and modified in Specify full path for Operator subscription. Version Specify full path for Operator subscription of test/integration/policy_install_operator_test.go left in tree.
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 Specify full path for Operator subscription
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

In response to this:

/cherry-pick release-2.10

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