AppArmor profile prevents link operation within /var/lib/ceph/osd/*.
This leads to daemon coredump. This patch ensures ceph-osd
is able to create links.

Change-Id: Ia03baac0fec7f134f53254b18e5498a87656817f
Closes-Bug: #1677470

ceph and swift-storage apps may end up on the same unit
so a different approach is needed.

This reverts commit 7b38a56c.

Change-Id: Id74e014d856718fbc5e4d714578b233145c9c047

This stops updatedb from indexing the storage locations

Change-Id: Idd77f0fc087a06af874d2865bfec8c319a0b15dd
Closes-bug: 1520226

Install apparmor profile for ceph-osd processes, and provide
associated configuration option to place any ceph-osd processes
into enforce, complain, or disable apparmor profile mode.

As this is the first release of this feature, default to disabled
and allow charm users to test and provide feedback for this
release.

Change-Id: I4524c587ac70de13aa3a0cb912033e6eb44b0403

All contributions to this charm where made under Canonical
copyright; switch to Apache-2.0 license as agreed so we
can move forward with official project status.

In order to make this change, this commit also drops the
inclusion of upstart configurations for very early versions
of Ceph (argonaut), as they are no longer required.

Change-Id: I9609dd79855b545a2c5adc12b7ac573c6f246d48