Add /v3 suffix to OPENSTACK_KEYSTONE_URL

Change I60162b54bc06e158534d29311d4474b34750c64d
removed the '/v3' suffix from horizon_keystone_url variable,
but the version is needed for some operations.
This patch fixes the "Change password" Horizon function
until Horizon bug #2073639 is resolved.

Closes-Bug: #2073159
Change-Id: I6ff46b47e9109d0757f2e5ce8019ba591b9892e1
(cherry picked from commit c0db4ac)
(cherry picked from commit e8aa5d2)

ansible/roles/horizon/templates/local_settings.j2

@@ -206,7 +206,8 @@ AVAILABLE_REGIONS = [
 
 OPENSTACK_HOST = "{{ kolla_internal_fqdn }}"
 
-OPENSTACK_KEYSTONE_URL = "{{ horizon_keystone_url }}"
+# TODO(fprzewozn): URL /v3 suffix is required until Horizon bug #2073639 is resolved
+OPENSTACK_KEYSTONE_URL = "{{ horizon_keystone_url }}/v3"
 OPENSTACK_KEYSTONE_DEFAULT_ROLE = "{{ keystone_default_user_role }}"
 
 {% if enable_keystone_federation | bool %}

releasenotes/notes/bug-2073159-c54c773c72c8fb11.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixes behaviour of Change Password screen in Horizon until
+    `bug #2073639 <https://launchpad.net/bugs/2073639>`__ is resolved.
+    `LP#2073159 <https://launchpad.net/bugs/2073159>`__