Remove haproxy and keepalived groups

This follows the same change in Kolla-Ansible.

Depends-On: https://review.opendev.org/c/openstack/kolla-ansible/+/807344
Change-Id: Ib2d7f0774fede570a8c4c315d83afd420c31da0b

ansible/roles/kolla-ansible/templates/overcloud-components.j2

@@ -26,7 +26,7 @@ storage
 monitoring
 
 [chrony-server:children]
-haproxy
+loadbalancer
 
 [chrony:children]
 control
@@ -75,12 +75,6 @@ compute
 [loadbalancer:children]
 network
 
-[keepalived:children]
-loadbalancer
-
-[haproxy:children]
-loadbalancer
-
 [mariadb:children]
 control
 

ansible/roles/kolla-ansible/templates/overcloud-services.j2

@@ -502,7 +502,7 @@ storage
 mariadb
 
 [prometheus-haproxy-exporter:children]
-haproxy
+loadbalancer
 
 [prometheus-memcached-exporter:children]
 memcached