Improvements

Rook v1.7.2 s a patch release limited in scope and focusing on small feature additions and bug fixes.

Ceph

Merge toleration for osd/prepareOSD pod if specified both places (#8566, @subhamkrai)
Fix panic when recreating the csidriver object (#8582, @Madhu-1)
Build with latest golang v1.16.7 (#8540, @BlaineEXE)
Do not check ok-to-stop when OSDs are in CLBO (#8583, @leseb)
Convert util.NewSet() to sets.NewString() (#8584, @parth-gr)
Add support for update() from lib-bucket-provisioner (#8514, @thotz)
Signal handling with context (#8441, @leseb)
Make storage device config nullable (#8552, @BlaineEXE)
Allow K8s version check on prerelease versions (#8561, @subhamkrai)
Add permissions to rook-ceph-mgr role for osd removal in rook orchestator (#8568, @josephsawaya)
Use serviceAccountName as the key in ceph csi templates (#8546, @humblec)
Consolidate the calls to set mon config (#8590, @travisn)