Merge "Fix Neutron precheck to not fail with newer Docker"

ansible/roles/neutron/tasks/precheck.yml

@@ -27,11 +27,14 @@
 
 # When MountFlags is set to shared, a signal bit configured on 20th bit of a number
 # We need to check the 20th bit. 2^20 = 1048576. So we are validating against it.
+# In some systems MountFlags on the Docker service is set to 'shared', whereas
+# in others it's set to the decimal value of the 20th bit. This now checks for both
+# values. Either '1048576' or 'shared' will pass the precheck.
 - name: Checking if 'MountFlags' for docker service is set to 'shared'
   command: systemctl show docker
   register: result
   changed_when: false
-  failed_when: result.stdout.find('MountFlags=1048576') == -1
+  failed_when: result.stdout.find('MountFlags=1048576') == -1 and result.stdout.find('MountFlags=shared') == -1
   when:
     - (inventory_hostname in groups['neutron-dhcp-agent']
        or inventory_hostname in groups['neutron-l3-agent']