* Update the ceph tell from ceph daemon tell id to the new
ceph tell deamon.id form
* Add usages examples for easier copy / paste
* Add MON to the list of daemons that can be profiled
* Document CEPH_HEAP_PROFILER_INIT=true
* Remove trailing empty lines
Signed-off-by: Loic Dachary <loic-201408@dachary.org>