add dynamic wrapper for nexus-repository-manager plugin

[JessicaJHee]

Description

Adds dynamic wrapper for nexus-repository-manager plugin after its migration to the community-plugins repo.

Which issue(s) does this PR fix

• Fixes RHIDP-3803

Please make sure that the following steps are complete:

• GitHub Actions are completed and successful
• Unit Tests are updated and passing
• E2E Tests are updated and passing
• Documentation is updated if necessary (requirement for new features)
• Add a screenshot if the change is UX/UI related

[github-actions]

The image is available at: quay.io/janus-idp/backstage-showcase:pr-1738!

[JessicaJHee]

/retest

[04kash]

/lgtm

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[github-actions]

The image is available at: quay.io/janus-idp/backstage-showcase:pr-1738!

[04kash]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: 04kash

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[openshift-ci]

@JessicaJHee: 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-tests	8ce4b2e	link	true	/test e2e-tests

Full PR test history. Your PR dashboard.

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[04kash]

The e2e-tests seem to be failing 🤔