package/apparmor: fixing installation os detection

package/apparmor: fixing installation os detection

Actually the install target of some tools like the parser tries to do
an os detection to understand what install and where.
Incidentally, when the install is invoked on SuSE, this will trig a bug
in parallel install which manifests as "target/lib/apparmor: File exists"
error. For this problem, a patch is already sent upstream.

For buildroot instead, the os detection is useless so we disable it
and use a generic install method.

Fixes:
http://autobuild.buildroot.net/results/b18c6a9ce67065dcb7968c6f473b3b403d2925d2

Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>