Remove lock for backup/restore/add-image/remove-image
Remove lock for backup/restore/add-image/remove-image

Would need more test cases to make sure it fails OK.

jinuxstyle/convoy,rancherio/rancher-volume,rancher/rancher-volume,dx9/convoy,rancher/rancher-volume,mehulsbhatt/convoy,moypray/convoy,moypray/convoy,rancherio/volmgr,rancherio/rancher-volume,mehulsbhatt/convoy,dx9/convoy,aruneli/convoy,rancher/convoy,rancher/convoy,aruneli/convoy,moypray/convoy,medallia/convoy,medallia/convoy,medallia/convoy,nickvanw/convoy,rancherio/rancher-volume,rancherio/volmgr,jinuxstyle/convoy,aruneli/convoy,nickvanw/convoy,nickvanw/convoy,rancher/rancher-volume,jinuxstyle/convoy,mehulsbhatt/convoy,rancherio/volmgr,rancher/convoy,dx9/convoy