Closes-Bug: #1355592
Issue: per osd pg count set to 32 caused pg set failure
Fix: incremental pg set change done based on current pg value

Change-Id: I8da897db028b42bf7b8f31c6f78d6003a0076d8f
Merge "Closes-Bug: #1355592 Issue: per osd pg count set to 32 caused pg set failure Fix: incremental pg set change done based on current pg value" into R1.10