Add new config to disable openrc_v2 in horizon

it's now possible to remove the openstack rc file v2 from horizon download list.

Change-Id: I7aa8d7a911585e00d8ede92bf909492cf70cba6e

defaults/main.yml

@@ -253,6 +253,9 @@ horizon_keystone_multidomain_dropdown: False
 
 horizon_keystone_default_domain: Default
 
+# Enable/disable v2 openrc file download in horizon.
+horizon_show_keystone_v2_rc: True
+
 ### Set the cacert pem for Keystone if you'd like Horizon to verify it.
 # horizon_cacert_pem: /path/to/cacert.pem
 

releasenotes/notes/keystone-openrc-v2-show-0bbfc8ab1dba8bd6.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - Add the possibility to disable openrc v2 download in the dashboard. new var
+    ``horizon_show_keystone_v2_rc`` can be set to ``False`` to remove the
+    entry for the openrc v2 download.

templates/horizon_local_settings.py.j2

@@ -92,6 +92,8 @@ OPENSTACK_KEYSTONE_DEFAULT_DOMAIN = "{{ horizon_keystone_default_domain }}"
 {%   endif %}
 {% endif %}
 
+SHOW_KEYSTONE_V2_RC =  "{{ horizon_show_keystone_v2_rc }}"
+
 # Set Console type:
 # valid options are "AUTO"(default), "VNC", "SPICE", "RDP", "SERIAL" or None
 # Set to None explicitly if you want to deactivate the console.