Merge pull request #48412 from rhcs-dashboard/fix-rgw-subuser-permissions

mgr/dashboard: Unable to change rgw subuser permission

Reviewed-by: Avan Thakkar <athakkar@redhat.com>
Reviewed-by: Nizamudeen A <nia@redhat.com>
Reviewed-by: Pere Diaz Bou <pdiazbou@redhat.com>

diff --cc src/pybind/mgr/dashboard/controllers/rgw.py
Simple merge