[release-4.17]: OKD-226: Dockerfile.rhel7: Add ARG TAGS=ocp

[Prashanth684]

Manual cherry-pick of #687 since auto cherry-pick was leading to a conflict.

[openshift-ci-robot]

@Prashanth684: This pull request references OKD-226 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the bug to target the "4.17.0" version, but no target version was set.

In response to this:

Manual cherry-pick of #687 since auto cherry-pick was leading to a conflict.

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 openshift-eng/jira-lifecycle-plugin repository.

[ausil]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: ausil, Prashanth684
Once this PR has been reviewed and has the lgtm label, please assign deads2k for approval. For more information see the Kubernetes Code Review Process.

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

Needs approval from an approver in each of these files:

• OWNERS

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

[Prashanth684]

/test e2e-operator

[xingxingxia]

/label cherry-pick-approved

[ausil]

/assign deads2k

[ausil]

/test e2e-operator

[openshift-ci]

@Prashanth684: The following test 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/prow/e2e-operator	36a9412	link	true	/test e2e-operator

Full PR test history. Your PR dashboard.

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-sigs/prow repository. I understand the commands that are listed here.