MTU Check

Adding a check for MTU.

Change-Id: I2234815251483b2d388d06c24343518ad45db26c

ansible/check/group_vars/controller

@@ -45,5 +45,11 @@ checks :
     neutron_rootwrap_daemon:
         url: "none"
         name: "Ensure rootwrap has daemon mode enabled"
+    neutron_dnsmasq_mtu:
+        url: "https://bugs.launchpad.net/tripleo/+bug/1590100"
+        name: "Ensure there is no dnsmasq setting to force MTU"
+    neutron_conf_mtu:
+        url: "https://bugs.launchpad.net/tripleo/+bug/1590101"
+        name: "The global_physnet_mtu should not be set unless by Administrator"
 
 # vi:syntax=yaml

ansible/check/roles/controller/tasks/main.yml

@@ -63,6 +63,7 @@
   register: rabbit_partitioned
   changed_when: no
   failed_when: rabbit_partitioned.rc == 0
+  ignore_errors: yes
 
 - name: Run MySQL Tuner script
   script: mysqltuner.pl --nocolor

ansible/check/roles/neutron/tasks/main.yml

@@ -12,3 +12,17 @@
   failed_when: neutron_rootwrap_daemon.rc == 1
   changed_when: false
   ignore_errors: True
+
+- name: Check MTU
+  shell: cat /etc/neutron/dnsmasq-neutron.conf | grep 'dhcp\-option\-force=26'
+  register: neutron_dnsmasq_mtu
+  failed_when: neutron_dnsmasq_mtu.rc == 0
+  changed_when: false
+  ignore_errors: True
+
+- name: Check Neutron.conf MTU
+  command: crudini --get /etc/neutron/neutron.conf DEFAULT global_physnet_mtu
+  register: neutron_conf_mtu
+  failed_when: neutron_conf_mtu.rc == 0
+  changed_when: false
+  ignore_errors: True