Rename host groups to host/instance

ansible/inventory

@@ -1 +1,5 @@
+[host_system]
 bob ansible_ssh_private_key_file=~/.ssh/keys/bob
+
+[instance_system]
+ansibletest ansible_connection=docker

ansible/playbook.yaml

@@ -1,6 +1,6 @@
 ---
 - name: Prepare incus server host
-  hosts: incus_server
+  hosts: host_system
   tasks:
     - name: Prepare system
       ansible.builtin.import_role:
@@ -15,7 +15,7 @@
 
   # ansible-galaxy install geerlingguy.docker
 - name: Install docker
-  hosts: docker_instance
+  hosts: instance_system
   tasks:
     - name: Install docker and docker compose
       ansible.builtin.import_role:
@@ -23,7 +23,7 @@
       tags: docker
 
 - name: Prepare all docker hosted containers
-  hosts: docker_instance
+  hosts: instance_system
   tasks:
     - name: Set up Arr stack
       ansible.builtin.import_role: