Open vSwitch service name is different between distros

The service is called openvswitch-switch on Debian/Ubuntu derivatives -
this starts ovsdb-server.service and ovs-vswitchd.service as
dependencies.

TrivialFix

Change-Id: I0cb06a387cfeadadb3b978afb4d17a88e9935d17

ansible/hypervisor_setup.yml

@@ -34,12 +34,12 @@
 - block:
     - name: Ensure Open vSwitch package is installed
       package:
-        name: "{{ openvswitch_pkg_name }}"
+        name: "{{ tenks_openvswitch_pkg_name }}"
       become: true
 
     - name: Ensure Open vSwitch is started and enabled
       service:
-        name: openvswitch
+        name: "{{ tenks_openvswitch_service_name }}"
         state: started
         enabled: true
       become: true

ansible/vars/Debian.yml

@@ -5,4 +5,7 @@ tenks_ip_path: /sbin/ip
 
 # package that provides the Open vSwitch daemon and userspace
 # utilities
-openvswitch_pkg_name: openvswitch-switch
+tenks_openvswitch_pkg_name: openvswitch-switch
+
+# service name of Open vSwitch daemon (as passed the Ansible service module)
+tenks_openvswitch_service_name: openvswitch-switch

ansible/vars/RedHat.yml

@@ -5,4 +5,7 @@ tenks_ip_path: /usr/sbin/ip
 
 # package that provides the Open vSwitch daemon and userspace
 # utilities
-openvswitch_pkg_name: openvswitch
+tenks_openvswitch_pkg_name: openvswitch
+
+# service name of Open vSwitch daemon (as passed the Ansible service module)
+tenks_openvswitch_service_name: openvswitch