Make users of libpod more secure by adding the libpod/apparmor package
to load a pre-defined AppArmor profile. Large chunks of libpod/apparmor
come from github.com/moby/moby.
Also check if a specified AppArmor profile is actually loaded and throw
an error if necessary.
The default profile is loaded only on Linux builds with the `apparmor`
buildtag enabled.
Signed-off-by: Valentin Rothberg <vrothberg@suse.com>
Closes: #1063
Approved by: rhatdan