selinux: Add some iscsi + misc rules

Change-Id: I10d2b1cea5c5c3b6e5fc00fdbbd911eefbe5ff0d
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1011193
Signed-off-by: Fabian Deutsch <fabiand@fedoraproject.org>