OCPBUGS-43478: generalize the RHEL8 and RHEL9 subscription_content.go test

[openshift-ci-robot]

@chandra0007: This pull request references Jira Issue OCPBUGS-43478, which is valid. The bug has been moved to the POST state.

3 validation(s) were run on this bug

* bug is open, matching expected state (open) * bug target version (4.18.0) matches configured target version for branch (4.18.0) * bug is in the state New, which is one of the valid states (NEW, ASSIGNED, POST)

The bug has been updated to refer to the pull request using the external bug tracker.

In response to [this](https://github.com/openshift/origin/pull/29315): > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Forigin). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: chandra0007 Once this PR has been reviewed and has the lgtm label, please assign sayan-biswas for approval. For more information see the Kubernetes Code Review Process.

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Needs approval from an approver in each of these files: - **[test/extended/builds/OWNERS](https://github.com/openshift/origin/blob/master/test/extended/builds/OWNERS)** Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[prb112]

/retest-required

[openshift-ci[bot]]

@chandra0007: 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/prow/e2e-aws-ovn-kube-apiserver-rollout	3ba811b28eb05980ed46f98b761fe1aa6ca27f89	link	false	/test e2e-aws-ovn-kube-apiserver-rollout
ci/prow/e2e-agnostic-ovn-cmd	3ba811b28eb05980ed46f98b761fe1aa6ca27f89	link	false	/test e2e-agnostic-ovn-cmd
ci/prow/e2e-aws-ovn-single-node-upgrade	3ba811b28eb05980ed46f98b761fe1aa6ca27f89	link	false	/test e2e-aws-ovn-single-node-upgrade
ci/prow/e2e-metal-ipi-ovn-ipv6	3ba811b28eb05980ed46f98b761fe1aa6ca27f89	link	true	/test e2e-metal-ipi-ovn-ipv6
ci/prow/verify	3ba811b28eb05980ed46f98b761fe1aa6ca27f89	link	true	/test verify
ci/prow/e2e-gcp-ovn-builds	3ba811b28eb05980ed46f98b761fe1aa6ca27f89	link	true	/test e2e-gcp-ovn-builds
ci/prow/okd-scos-e2e-aws-ovn	3ba811b28eb05980ed46f98b761fe1aa6ca27f89	link	false	/test okd-scos-e2e-aws-ovn

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository. I understand the commands that are listed [here](https://go.k8s.io/bot-commands).

[openshift-trt[bot]]

Job Failure Risk Analysis for sha: 3ba811b28eb05980ed46f98b761fe1aa6ca27f89

Job Name

Failure Risk

pull-ci-openshift-origin-master-e2e-metal-ipi-ovn-ipv6

Medium [sig-arch][Late] operators should not create watch channels very often [apigroup:apiserver.openshift.io] [Suite:openshift/conformance/parallel] This test has passed 87.04% of 54 runs on jobs ['periodic-ci-openshift-release-master-nightly-4.19-e2e-metal-ipi-ovn-ipv6' 'periodic-ci-openshift-release-master-nightly-4.18-e2e-metal-ipi-ovn-ipv6'] in the last 14 days. Open Bugs Component Readiness: [Unknown] [Other] test regressed