Make the servicemanager domain enforcing.

Change-Id: I410ba7dc105322135463fa6f76cac75d6b65e38a
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

servicemanager.te

 # servicemanager - the Binder context manager
 type servicemanager, domain;
-permissive servicemanager;
 type servicemanager_exec, exec_type, file_type;
 
 init_daemon_domain(servicemanager)