mon osd feature checks for osdmap flags and require-osd-release fail if 0 up osds
3 - minor
Pull request ID:
Crash signature (v1):
Crash signature (v2):
the various checks test get_up_osd_features() but that returns 0 if no osds are up.
needs to be fixed in luminous and master branch (tho it won't be a straight backport)