Add "Apparmor" option group to config shell

[rjfd]

ceph-bootstrap

Add a Apparmor option group to the config shell. This group should be able to configure all options required by ceph-salt-formula:apparmor state.

ceph-salt-formula

Currently the apparmor state is not doing much. We should check what was being done in DeepSea (https://github.com/SUSE/DeepSea/tree/master/srv/salt/ceph/apparmor) and add those things to ceph-salt formula.

Also, we need to check what cephadm is doing in this regard, and make sure that what ceph-salt formula preforms is compatible with cephadm.