osd: do not send peering messages during init

Do not send any peering messages while we are still working our way
through init().

Fixes: #7093
Signed-off-by: Sage Weil <sage@inktank.com>
osd: ignore OSDMap messages while we are initializing

The mon may occasionally send OSDMap messages to random OSDs, but is not
very descriminating in that we may not have authenticated yet.  Ignore any
messages if that is the case; we will reqeust whatever we need during the
BOOTING state.

Fixes: #7093
Signed-off-by: Sage Weil <sage@inktank.com>
mon: only send messages to current OSDs

When choosing a random OSD to send a message to, verify not only that
the OSD id is up but that the session is for the same instance of that OSD
by checking that the address matches.

Fixes: #7093
Backport: emperor, dumpling
Signed-off-by: Sage Weil <sage@inktank.com>