Bump kolla-ansible to stackhpc/18.6.0.2

Author: stackhpc-ci

etc/kayobe/stackhpc.yml

@@ -157,7 +157,7 @@ stackhpc_kolla_source_version: stackhpc/18.6.0.2
 
 # Kolla Ansible source repository.
 stackhpc_kolla_ansible_source_url: "https://github.com/stackhpc/kolla-ansible"
-stackhpc_kolla_ansible_source_version: stackhpc/18.6.0.1
+stackhpc_kolla_ansible_source_version: stackhpc/18.6.0.2
 
 ###############################################################################
 # Container image registry