update readme

README.md

@@ -10,6 +10,7 @@ There are some playbooks that are meant to be ran locally. There are also cases
 
 * local-ansible.cfg will need to be used
 * `init-rocky-ansible-host.yml` will need to be ran using that configuration file (if there are roles/collections needed)
+* **It is highly recommended that you change all `host: all` to `host: '{{ host }}'` as you may want more control.**
 
 ## Provides / Information
 

role-rocky-rabbitmq.yml

@@ -1,7 +1,7 @@
 ---
 # Stands up a RabbitMQ Cluster
 - name: Configure RabbitMQ
-  hosts: all
+  hosts: '{{ host }}'
   become: true
   vars_files:
     # vars/vaults/encpass.yml