rados/thrash: turn up client debugging on rados api tests

Signed-off-by: Sage Weil <sage@redhat.com>
tasks/watch_notify_same_primary: fix test for new watch/notify

It now checks for 'notify1' and 'notify2' strings, allowing it to work
on both old and new versions of rados watch command.

Signed-off-by: Sage Weil <sage@redhat.com>