mgr/cephadm: don't mark daemons created/removed in the last minute as stray

mgr/cephadm: don't mark daemons created/removed in the last minute as stray

There is sometimes a slight delay between when the core
mgr knows a daemon has been created/removed and when cephadm knows
it as been created/removed. This can cause stray daemon warnings
to pop up for a few seconds at a time. This patch tries
to avoid that by not marking daemons as stray that it
knows it just created/removed in the past minute.

Signed-off-by: Adam King <adking@redhat.com>