Add Rocky Linux 8 CI pipeline jobs

Description

This MR adds rockylinux 8 CI RPM build jobs.

API Changes and Justification

Backwards Compatible Changes

• This change does not modify any class/function/struct/type definitions in a public C header file or any Python class/function definitions
• This change adds new classes/functions/structs/types to a public C header file or Python module

Backwards Incompatible Changes

• This change modifies an existing class/function/struct/type definition in a public C header file or Python module
• This change removes an existing class/function/struct/type from a public C header file or Python module

If any of the Backwards Incompatible check boxes are ticked please provide a justification why this change is necessary and why it needs to be done in a backwards incompatible way.

Review Status

Please provide details on any reviews related to this change and and the associated reviewers.

common/maintainer-scripts/check_library_dependencies

@@ -197,7 +197,7 @@ def check_gitlab_depends(lib, depends):
                 gitlab_ci.update(safe_load_ignore_unknown(f))
     error = 0
 
-    for pkg in ('pkg', 'conda', 'deb', 'rpm-el7', 'koji'):
+    for pkg in ('pkg', 'conda', 'deb', 'rpm-el7', 'rpm-el8', 'koji'):
         found = set()
         ci_job_name = f'{lib}:{pkg}'
         for needs in gitlab_ci[ci_job_name]['needs']: