Make rabbitmq inventory group configurable

The default value of "rabbitmq_all" remains, but this
change should allow deployers to target the role to multiple
groups now.

Change-Id: Idc1bc44b005f09f9dc7eb9778719a8ba92756c06
Implements: blueprint multi-rabbitmq-clusters

tests/inventory

@@ -4,10 +4,10 @@ container1 ansible_ssh_host=10.100.100.101 ansible_host=10.100.100.101 ansible_b
 container2 ansible_ssh_host=10.100.100.102 ansible_host=10.100.100.102 ansible_become=True ansible_user=root
 container3 ansible_ssh_host=10.100.100.103 ansible_host=10.100.100.103 ansible_become=True ansible_user=root
 
-[rabbitmq_all]
+[rabbitmq_all_other]
 container1
 container2
 container3
 
 [all_containers:children]
-rabbitmq_all
+rabbitmq_all_other

tests/test-install-rabbitmq-server.yml

@@ -16,7 +16,7 @@
 # NOTE(mancdaz): rabbitmq cannot be upgraded in serial, so when
 # rabbitmq_upgrade=True, serial is set to 0, else it is 1 for installs
 - name: Install RabbitMQ server
-  hosts: rabbitmq_all
+  hosts: "{{ rabbitmq_host_group }}"
   serial: "{{ rabbitmq_upgrade|default(false) | bool | ternary(0, 1)}}"
   user: root
   gather_facts: true

tests/test-rabbitmq-server-functional.yml

@@ -14,7 +14,7 @@
 # limitations under the License.
 
 - name: Run functional tests
-  hosts: rabbitmq_all
+  hosts: "{{ rabbitmq_host_group }}"
   user: root
   gather_facts: true
   vars_files:

tests/test-vars.yml

@@ -1,3 +1,4 @@
+rabbitmq_host_group: "rabbitmq_all_other"
 rabbitmq_cookie_token: secrete
 rabbitmq_ssl_cert: /etc/rabbitmq/rabbitmq.pem
 rabbitmq_ssl_key: /etc/rabbitmq/rabbitmq.key