The neutron containers were not being restarted if only the ml2_conf.ini
file is changed. This is due to the XenAPI ml2_conf.ini config task
registering a variable of the same name as the task that generates
ml2_conf.ini for other services. Since the XenAPI service is typically
not running, the tasks show as not changed, and the handler skips
restarting the container.
This change adds a second variable for XenAPI to avoid this shadowing.
Change-Id: I77819ed8defb8a7653e1e5aec92013b1d40fbf02
Closes-Bug: #1783268
43c83b51cf