Remove config-mgmt group, instead use localhost

There are places where we assume the control host is localhost, so this group is of
little use.

ansible/bootstrap.yml

@@ -1,6 +1,6 @@
 ---
 - name: Ensure configuration management host is bootstrapped
-  hosts: config-mgmt
+  hosts: localhost
   roles:
     - role: bootstrap
       bootstrap_ssh_key_type: "{{ ssh_key_type }}"

ansible/dell-compute-node-inventory.yml

@@ -1,6 +1,6 @@
 ---
 - name: Ensure Dell baremetal compute nodes are present in the Ansible inventory
-  hosts: config-mgmt
+  hosts: localhost
   gather_facts: no
   vars:
     # Set this to a colon-separated list of baremeal compute node hostnames on

ansible/kolla-ansible.yml

@@ -1,6 +1,6 @@
 ---
 - name: Ensure Kolla Ansible is configured
-  hosts: config-mgmt
+  hosts: localhost
   vars:
     # We need to reference configuration for the controller and seed nodes.
     # We pick the first host from each group for this. It is possible that at

ansible/kolla-bifrost.yml

@@ -1,6 +1,6 @@
 ---
 - name: Ensure Kolla Bifrost is configured
-  hosts: config-mgmt
+  hosts: localhost
   vars:
     kolla_bifrost_extra_globals_path: "{{ kayobe_config_path ~ '/kolla/config/bifrost/bifrost.yml' }}"
     kolla_bifrost_driver_map:

ansible/kolla-openstack.yml

@@ -72,7 +72,7 @@
         - config
 
 - name: Ensure Kolla OpenStack components are configured
-  hosts: config-mgmt
+  hosts: localhost
   vars:
     switch_type_to_device_type:
       dellos9: netmiko_dell_force10

ansible/public-openrc.yml

@@ -3,7 +3,7 @@
 # as the admin user in the admin project.
 
 - name: Ensure a public OpenStack API environment file exists
-  hosts: config-mgmt
+  hosts: localhost
   vars:
     public_api_proto: "{% if kolla_enable_tls_external | bool %}https{% else %}http{% endif %}"
     public_api_vip_address: "{{ public_net_name | net_vip_address }}"

doc/source/configuration/kayobe.rst

@@ -82,8 +82,7 @@ Inventory
 The inventory should contain the following hosts:
 
 Control host
-    This should be localhost and should be a member of the ``config-mgmt``
-    group.
+    This should be localhost.
 Seed hypervisor
     If provisioning a seed VM, a host should exist for the hypervisor that
     will run the VM, and should be a member of the ``seed-hypervisor`` group.

etc/kayobe/inventory/hosts.example

@@ -1,7 +1,6 @@
 # Kayobe hosts inventory file. This file should be modified to define the hosts
 # and their top-level group membership.
 
-[config-mgmt]
 # This host acts as the configuration management control host. This must be
 # localhost.
 localhost ansible_connection=local