Set broker_state when enabling plugins with ansible 2.10
Set broker_state when enabling plugins with ansible 2.10

Test enabling plugins when broker is not running, see [1].

[1] https://github.com/ansible-collections/community.rabbitmq/commit/da644207923089bb504c888162d39bd33f91d09b

Change-Id: Id1cb84220fc587aa4cde87b75346742a59e59805

openstack/openstack-ansible-rabbitmq_server,openstack/openstack-ansible-rabbitmq_server