Description of problem:
There seems to be missing dependency for the python-enum34 in the ceph-mgr-14.2.8-111.el7cp.x86_64 on the RHEL7.

It’s mentioned the changelog for the ceph  rpm packages:
* Mon Aug 24 2020 Thomas Serlin <tserlin> 2:14.2.8-100
- mgr: Add python-enum34 dependency to package for older distributions (rhbz#1848494)

But it doesn’t seem to be actually applied:
# rpm -q ceph-mgr --requires | grep enum
# 

On the ceph-mgr node the /var/log/ceph/ceph-mgr.log has:
2020-10-05 13:07:33.597 7f5551597cc0 -1 mgr[py] Module not found: 'volumes'
2020-10-05 13:07:33.597 7f5551597cc0 -1 mgr[py] Traceback (most recent call last):
  File "/usr/share/ceph/mgr/volumes/__init__.py", line 2, in <module>
    from .module import Module
  File "/usr/share/ceph/mgr/volumes/module.py", line 7, in <module>
    from .fs.volume import VolumeClient
  File "/usr/share/ceph/mgr/volumes/fs/volume.py", line 12, in <module>
    from .operations.group import open_group, create_group, remove_group, open_group_unique
  File "/usr/share/ceph/mgr/volumes/fs/operations/group.py", line 9, in <module>
    from .template import GroupTemplate
  File "/usr/share/ceph/mgr/volumes/fs/operations/template.py", line 3, in <module>
    from enum import Enum, unique
ImportError: No module named enum

2020-10-05 13:07:33.598 7f5551597cc0 -1 mgr[py] Class not found in module 'volumes'
2020-10-05 13:07:33.598 7f5551597cc0 -1 mgr[py] Error loading module 'volumes': (2) No such file or directory
2020-10-05 13:07:33.598 7f5551597cc0  1 mgr[py] Loading python module 'zabbix'
2020-10-05 13:07:33.611 7f5551597cc0 -1 log_channel(cluster) log [ERR] : Failed to load ceph-mgr modules: volumes

Version-Release number of selected component (if applicable):
RHCS 14.2.8-111

How reproducible:
Always

Expected results:

The python-enum34 package should bundled in ceph-mgr-14.2.8-111.el7cp.x86_64

Additional info:
Workaround is to manually install the "python-enum34"