Remove usage of haproxy-endpoints role

haproxy-endpoints role was used only to manage galera backends.
To have more consistency and as transition was never finished,
we rollback to using inlcuded task.

Also role usage was a bit complex and hard to read. It also had a
drawback that service can be broken before handler run, which makes
endpoint managing a bit useless in this scenario.

As follow-up we should also drop all "Manage LB" handlers in roles.

Change-Id: I1293776f58a799c9e9dd70f8cd076ed2e2b1bdfe

ansible-role-requirements.yml

@@ -317,12 +317,6 @@
   version: 4a9217ed0fe9078152435daaa2d3f45b81021b3a
   trackbranch: master
   shallow_since: '2019-09-14'
-- name: haproxy_endpoints
-  scm: git
-  src: https://github.com/logan2211/ansible-haproxy-endpoints
-  version: 8e3a24a35beb16d717072dc83895c5a1f92689fb
-  trackbranch: master
-  shallow_since: '2018-03-22'
 - name: pacemaker_corosync
   scm: git
   src: https://github.com/noonedeadpunk/ansible-pacemaker-corosync

playbooks/galera-install.yml

@@ -38,20 +38,27 @@
     - include_tasks: common-tasks/unbound-clients.yml
       when:
         - hostvars['localhost']['resolvconf_enabled'] | bool
+    - include_tasks: common-tasks/haproxy-endpoint-manage.yml
+      vars:
+        haproxy_backend: galera-back
+        haproxy_state: drain
+      when:
+        - "groups['galera_all'] | length > 1"
   roles:
-    - role: haproxy_endpoints
-      haproxy_state: disabled
-      when: "groups['haproxy'] | default([]) | length > 0"
     - role: "galera_server"
       vars:
         galera_install_client: "{{ (galera_root_user == 'root') }}"
         galera_install_server: true
-    - role: haproxy_endpoints
-      haproxy_state: enabled
-      when: "groups['haproxy'] | default([]) | length > 0"
     - role: "openstack.osa.system_crontab_coordination"
       tags:
         - crontab
+  post_tasks:
+    - include_tasks: common-tasks/haproxy-endpoint-manage.yml
+      vars:
+        haproxy_backend: galera-back
+        haproxy_state: enabled
+      when:
+        - "groups['galera_all'] | length > 1"
   vars:
     galera_server_id: "{{ inventory_hostname | openstack.osa.string_2_int }}"
     galera_wsrep_node_name: "{{ container_name | default(inventory_hostname) }}"