removed redundant handler and flushed handler right away

loading lxc-openstack profile into apparmor is done with service reloading,
so the redundant loading handler of lxc-openstack is removed.
The reloading handler is flushed right away in case of interrupted execution.

Change-Id: I7a0e9d886808e0949a0e8301c6a5ea2994c6cd49
closes-bug: 1620757

handlers/main.yml

@@ -13,13 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-- name: Load lxc-openstack apparmor profile
-  command: apparmor_parser -Kr /etc/apparmor.d/lxc-openstack
-
-- name: Restart apparmor
+- name: Reload apparmor
   service:
     name: "apparmor"
-    state: "restarted"
+    state: "reloaded"
 
 - name: Init reload
   command: "initctl reload-configuration"

tasks/lxc_install_apt.yml

@@ -64,8 +64,10 @@
     group: "root"
     mode: "0644"
   notify:
-    - Load lxc-openstack apparmor profile
-    - Restart apparmor
+    - Reload apparmor
   tags:
     - lxc-files
     - lxc-apparmor
+
+- name: Flush handler to reload apparmor profiles
+  meta: flush_handlers