test/cli: Update for only 1 default pool

Tests for osdmaptool previously assumed that --createsimple
would always result in at least 3 pools.

Signed-off-by: John Spray <john.spray@inktank.com>
mon: hide mdsmap in 'ceph status' if not enabled

Previously we checked if the MDS map had ever been
updated (epoch > 1), now we have an explicit flag
for whether it's enabled.

Signed-off-by: John Spray <john.spray@inktank.com>