Modifying install-guide to include public endpoint for identity service

- Adding a line to set www_authenticate_uri to point to the public identity endpoint
- Removing version for public endpoint of identity service as per discussion in
  https://review.opendev.org/#/c/643938/5/doc/source/install/from-pypi.rst@139

Change-Id: Iba5e5c9289196f24f0fbe0ae305d6bd834d18645
Closes-Bug: #1822986

doc/source/install/compute-install-obs.rst

@@ -74,7 +74,8 @@ Install and configure components
 
         [keystone_authtoken]
         # ...
-        auth_url = http://controller:5000/v3
+        www_authenticate_uri = http://controller:5000/
+        auth_url = http://controller:5000/
         memcached_servers = controller:11211
         auth_type = password
         project_domain_name = Default

doc/source/install/compute-install-rdo.rst

@@ -66,7 +66,8 @@ Install and configure components
 
         [keystone_authtoken]
         # ...
-        auth_url = http://controller:5000/v3
+        www_authenticate_uri = http://controller:5000/
+        auth_url = http://controller:5000/
         memcached_servers = controller:11211
         auth_type = password
         project_domain_name = Default

doc/source/install/compute-install-ubuntu.rst

@@ -56,7 +56,8 @@ Install and configure components
 
         [keystone_authtoken]
         # ...
-        auth_url = http://controller:5000/v3
+        www_authenticate_uri = http://controller:5000/
+        auth_url = http://controller:5000/
         memcached_servers = controller:11211
         auth_type = password
         project_domain_name = Default

doc/source/install/controller-install-obs.rst

@@ -240,7 +240,8 @@ Install and configure components
 
         [keystone_authtoken]
         # ...
-        auth_url = http://controller:5000/v3
+        www_authenticate_uri = http://controller:5000/
+        auth_url = http://controller:5000/
         memcached_servers = controller:11211
         auth_type = password
         project_domain_name = Default

doc/source/install/controller-install-rdo.rst

@@ -223,7 +223,8 @@ Install and configure components
 
         [keystone_authtoken]
         # ...
-        auth_url = http://controller:5000/v3
+        www_authenticate_uri = http://controller:5000/
+        auth_url = http://controller:5000/
         memcached_servers = controller:11211
         auth_type = password
         project_domain_name = Default

doc/source/install/controller-install-ubuntu.rst

@@ -221,7 +221,8 @@ Install and configure components
 
         [keystone_authtoken]
         # ...
-        auth_url = http://controller:5000/v3
+        www_authenticate_uri = http://controller:5000/
+        auth_url = http://controller:5000/
         memcached_servers = controller:11211
         auth_type = password
         project_domain_name = Default