Removed sequence upgrading osd before mon as invalid, fixes http://tracker.ceph.com/issues/7679

This is to fix #7679

I checked with several people and it seems that we must upgrade monitors before osd's.
So removed  osd-mon-mds sequence.

@tmuthamizhan 
@johnwilkins 

Pls review and merge.

Signed-off-by: Yuri Weinstein <yuri.weinstein@inktank.com>