Hi gouthamr 
Regarding your email about testing cachetools 4.2.1 and 5.2.0 and packaging 20.9 and 21.3 for backporting to Antelope and Wallaby.
I tested packages manually and didn't notice any issues. Namely:
I installed new version of packages using:
 pip install --force-reinstall packaging==21.3   ... and so on
Restarted manila services to pick up new changes:
sudo systemctl restart devstack@m-shr ... and so on.
Tried create/delete share, snapshot, grant/revoke access:
alias manila='openstack share'
manila create --name share1 --share-type vast nfs 2  ...... and so on

Is this enough to prove it is working? Should I lower version in current master branch?