Description of problem:
The "restart node" failed when installing openshift with flannel.


Version-Release number of the following components:
rpm -q openshift-ansible
openshift-ansible-3.9.0-0.22.0.git.0.0e9d896.el7.noarch.rpm
rpm -q ansible
2.4.2.0-2.el7

How reproducible:
always

Steps to Reproduce:
1. Add the following lines to inventory file to install openshift with flannel network plugin
openshift_use_openshift_sdn=false
openshift_use_flannel=true
2. The installation failed in task "RUNNING HANDLER [flannel : restart node]"
3.

Actual results:

RUNNING HANDLER [flannel : restart node] ***************************************
Monday 22 January 2018  10:38:15 +0000 (0:00:02.629)       0:06:05.140 ******** 
fatal: [host-8-245-179.host.centralci.eng.rdu2.redhat.com]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'openshift_service_type' is undefined\n\nThe error appears to have been in '/home/slave3/workspace/Launch Environment Flexy/private-openshift-ansible/roles/flannel/handlers/main.yml': line 16, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- name: restart node\n  ^ here\n\nexception type: <class 'ansible.errors.AnsibleUndefinedVariable'>\nexception: 'openshift_service_type' is undefined"}
fatal: [host-8-247-67.host.centralci.eng.rdu2.redhat.com]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'openshift_service_type' is undefined\n\nThe error appears to have been in '/home/slave3/workspace/Launch Environment Flexy/private-openshift-ansible/roles/flannel/handlers/main.yml': line 16, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- name: restart node\n  ^ here\n\nexception type: <class 'ansible.errors.AnsibleUndefinedVariable'>\nexception: 'openshift_service_type' is undefined"}

Failure summary:


  1. Hosts:    host-8-245-179.host.centralci.eng.rdu2.redhat.com, host-8-247-67.host.centralci.eng.rdu2.redhat.com
     Play:     Additional node config
     Task:     restart node
     Message:  The task includes an option with an undefined variable. The error was: 'openshift_service_type' is undefined
               
               The error appears to have been in '/home/slave3/workspace/Launch Environment Flexy/private-openshift-ansible/roles/flannel/handlers/main.yml': line 16, column 3, but may
               be elsewhere in the file depending on the exact syntax problem.
               
               The offending line appears to be:
               
               
               - name: restart node
                 ^ here
               
               exception type: <class 'ansible.errors.AnsibleUndefinedVariable'>
               exception: 'openshift_service_type' is undefined


Expected results:
Should be able to install openshift with flannel network without errors.


Additional info: