do not re-raise exceptions in __exit__

Signed-off-by: Alfredo Deza <alfredo@deza.pe>
add a docstring for logging in write_conf

Signed-off-by: Alfredo Deza <alfredo@deza.pe>
strip leading/trailing whitespace from function docs

Signed-off-by: Alfredo Deza <alfredo@deza.pe>
add missing config write function when mon create is called
Merge pull request #32 from alfredodeza/5849

Make sure `ceph-deploy mon create {node}` writes to `/etc/ceph/{node}.conf`