Convert all RabbitMQ configs to nested

Change-Id: Ifd74ff24545a4d1019a4918b403b7b7b36237208

service/files/defaults.yaml

@@ -1,4 +1,5 @@
 configs:
-    rabbitmq_port: 5672
-    rabbitmq_password: password
-    rabbitmq_user: rabbitmq
+  rabbitmq:
+    port: 5672
+    password: password
+    user: rabbitmq

service/files/erlang.cookie

@@ -1 +1 @@
-{{ rabbitmq_password }}
+{{ rabbitmq.password }}

service/files/rabbitmq.config.j2

@@ -1,10 +1,10 @@
 [
   {rabbit, [
     {tcp_listeners, [
-      {"0.0.0.0", {{ rabbitmq_port }} }
+      {"0.0.0.0", {{ rabbitmq.port }} }
     ]},
-    {default_user, <<"{{ rabbitmq_user }}">>},
-    {default_pass, <<"{{ rabbitmq_password }}">>},
+    {default_user, <<"{{ rabbitmq.user }}">>},
+    {default_pass, <<"{{ rabbitmq.password }}">>},
     {cluster_partition_handling, autoheal}
   ]}
 ].

service/rabbitmq.yaml

@@ -1,7 +1,7 @@
 service:
   name: rabbitmq
   ports:
-    - {{ rabbitmq_port }}
+    - {{ rabbitmq.port }}
   containers:
     - name: rabbitmq
       image: rabbitmq