OSD needs restart after upgrade to luminous IF upgraded before a luminous quorum
If an OSD is upgraded to luminous before the monmap has the luminous feature, it will require to be restarted before it will boot into a full luminous quorum.
Tested against 9b3c2084799d011e066f7772f5381d772bf2925a.
Reproducing this is fairly straightforward. Starting with a kraken vstart cluster:
- restart osd.0 / upgrade to luminous
- restart all monitors / upgrade to luminous
- wait for osd.0 to finally boot (it really doesn't)
- restart osd.0 and see it boot up