CLOUDSTACK-5649: Vms are stopped and not migrated from a host when the
host is put in maintenance mode. The migrate flag wasn't set to true in
the maintain answer. This caused cloudstack to not to schedule a migration
work item for vms on the host. Made a change to set the migrate flag to
true in migrate answer.
CLOUDSTACK-2237: Automation - Adding new test cases for security group in advanced zone feature