Add starbuck and apollo as active/active app hosts.

Mirror roslin host_apps (no monica worker) so NPM can balance the same
ports on 10.0.0.44 and 10.0.0.7 (closes #20).

inventory/host_vars/apollo.yml

@@ -0,0 +1,18 @@
+---
+# Mirrors roslin for active/active. Ports MUST match adama/roslin so NPM
+# upstreams can balance apollo:PORT with the other app hosts.
+host_apps:
+  - { name: company_site, env: prod, port: 8000 }
+  - { name: dta_service, env: prod, port: 8001 }
+  - { name: dta_service, env: beta, port: 8011 }
+  - { name: dta_webapp, env: prod, port: 8080 }
+  - { name: dta_webapp, env: beta, port: 8081 }
+  - { name: scha, env: prod, port: 8002 }
+  # optional: - { name: scha, env: beta, port: 8012 }
+  - { name: chat_web_app, env: prod, port: 8082 }
+  - { name: chat_web_app, env: beta, port: 8083 }
+  - { name: chat_backend, env: prod, port: 8003 }
+  - { name: chat_backend, env: beta, port: 8013 }
+  # monica_site worker NOT here — adama host_apps sets compose_profiles: [worker].
+  - { name: monica_site, env: prod, port: 8004 }
+  - { name: monica_site, env: beta, port: 8014 }