Rename container hostname from awx_1 to awx-1

* Django and other webservers that care about proper hostnames don't
  like underscores in them.

tools/docker-compose/ansible/roles/sources/templates/docker-compose.yml.j2

@@ -27,7 +27,7 @@ services:
     user: "{{ ansible_user_uid }}"
     image: "{{ awx_image }}:{{ awx_image_tag }}"
     container_name: tools_awx_{{ container_postfix }}
-    hostname: awx_{{ container_postfix }}
+    hostname: awx-{{ container_postfix }}
     command: launch_awx.sh
     environment:
       OS: "{{ os_info.stdout }}"

tools/docker-compose/ansible/roles/sources/templates/prometheus.yml.j2

@@ -4,12 +4,10 @@ global:
   scrape_interval: {{ scrape_interval }}  # Set the scrape interval to something faster. Default is every 1 minute.
 
 scrape_configs:
-  - job_name: 'awx'
+  - job_name: 'awx-metrics'
     static_configs:
     - targets:
-      # metrics are broadcast to all nodes in the cluster,
-      # so no need to track nodes individually.
-      - awx1:8013
+      - awx-1:8013
     metrics_path: /api/v2/metrics
     scrape_interval: {{ scrape_interval }}
     scheme: http
@@ -18,3 +16,16 @@ scrape_configs:
     basic_auth:
       username: admin
       password: {{ admin_password }}
+
+  - job_name: 'awx-wsrelay'
+    static_configs:
+    - targets:
+{% for i in range(control_plane_node_count|int) %}
+  {% set container_postfix = loop.index %}
+      - awx-{{ container_postfix }}:8016
+{% endfor %}
+    metrics_path: /
+    scrape_interval: {{ scrape_interval }}
+    scheme: http
+    params:
+      format: ['txt']

tools/docker-compose/ansible/roles/sources/templates/receptor-awx.conf.j2

@@ -1,9 +1,9 @@
 ---
 - node:
-    id: awx_{{ item }}
+    id: awx-{{ item }}
     firewallrules:
       - action: "reject"
-        tonode: awx_{{ item }}
+        tonode: awx-{{ item }}
         toservice: "control"
 
 - log-level: info
@@ -24,7 +24,7 @@
 
 {% for i in range(item | int + 1, control_plane_node_count | int + 1) %}
 - tcp-peer:
-    address: awx_{{ i }}:2222
+    address: awx-{{ i }}:2222
     redial: true
 {% endfor %}