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: Icea5d0b43473d9bcd589572b5f49664cfef6229d
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"