common: move aaa entities to aaa subpackage

Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1120720
Change-Id: Ie0172b62807cb76c8abfe04fb49f29747e96c819
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>
aaa: move builtin utils into builtins

Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1120720
Topic: AAA
Change-Id: Idec6e4d2391713705c3e66674d1dd65859b125d0
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>