Made separate files for different services.

Not sure if i'll keep going this way or find some other solution.

common.yml

@@ -0,0 +1,5 @@
+---
+- hosts: all
+  become: True
+  roles:
+      - common

database.yml

@@ -0,0 +1,5 @@
+---
+- hosts: database
+  become: True
+  roles:
+     - mariadb

dockerregistry.yml

@@ -0,0 +1,5 @@
+---
+- hosts: dockerregistry
+  become: True
+  roles:
+      - dockerregistry

keystone.yml

@@ -0,0 +1,5 @@
+---
+- hosts: keystone
+  become: True
+  roles:
+     - keystone

main.yml

@@ -1,7 +1,6 @@
 ---
-# Run all plays as root.
+- include: common.yml
-- hosts: rabbitmq
+- include: database.yml
-  become: True
+- include: dockerregistry.yml
-  roles:
+- include: mariadb.yml
-      - common
+- include: rabbitmq.yml
-      - rabbitmq

mariadb.yml

@@ -0,0 +1,7 @@
+---
+# Run all plays as root.
+- hosts: databases
+  become: True
+  roles:
+      - common
+      - mariadb

rabbitmq.yml

@@ -0,0 +1,5 @@
+---
+- hosts: rabbitmq
+  become: True
+  roles:
+      - rabbitmq