Switch Rackspace Flex authentication to project_id

For some reason (cache lookup timeouts?) using the project name and
domain wasn't working initially (but did begin working some time
after also logging into the Skyline dashboard). As a matter of
robustness, use the project IDs instead which worked immediately
with no problem.

Since we needed to add new values in our private hostvars for this,
go ahead and separate out the hostvars used for other items too as
future-proofing. These have all been added on the bridge now.

While we're here, do some cleanup of unnecessary default values
pointed out on the previous review.

Change-Id: I850ef61932e9818495fa99e1d13360693f82edd8

playbooks/templates/clouds/bridge_all_clouds.yaml.j2

@@ -75,25 +75,19 @@ clouds:
       - name: SJC3
     auth:
       auth_url: 'https://keystone.api.sjc3.rackspacecloud.com/v3'
-      project_name: '{{ clouds.openstackci_rax_project_id }}_Flex'
-      project_domain_name: rackspace_cloud_domain
-      username: '{{ clouds.openstackci_rax_username }}'
-      password: '{{ clouds.openstackci_rax_key }}'
+      project_id: '{{ clouds.opendevci_raxflex_project_id }}'
+      username: '{{ clouds.opendevci_raxflex_username }}'
+      password: '{{ clouds.opendevci_raxflex_key }}'
       user_domain_name: rackspace_cloud_domain
-    interface: public
-    identity_api_version: '3'
   opendevzuul-raxflex:
     regions:
       - name: SJC3
     auth:
       auth_url: 'https://keystone.api.sjc3.rackspacecloud.com/v3'
-      project_name: '{{ clouds.openstackjenkins_rax_project_id }}_Flex'
-      project_domain_name: rackspace_cloud_domain
-      username: '{{ clouds.openstackjenkins_rax_username }}'
-      password: '{{ clouds.openstackjenkins_rax_key }}'
+      project_id: '{{ clouds.opendevzuul_raxflex_project_id }}'
+      username: '{{ clouds.opendevzuul_raxflex_username }}'
+      password: '{{ clouds.opendevzuul_raxflex_key }}'
       user_domain_name: rackspace_cloud_domain
-    interface: public
-    identity_api_version: '3'
   openstackjenkins-ovh:
     regions:
       - GRA1

playbooks/templates/clouds/nodepool_clouds.yaml.j2

@@ -55,13 +55,10 @@ clouds:
               prefix: 'nodepool.task.raxflex-sjc3'
     auth:
       auth_url: 'https://keystone.api.sjc3.rackspacecloud.com/v3'
-      project_name: '{{ nodepool_rackspace_project }}_Flex'
-      project_domain_name: rackspace_cloud_domain
-      username: '{{ nodepool_rackspace_username }}'
-      password: '{{ nodepool_rackspace_key }}'
+      project_id: '{{ nodepool_raxflex_project }}'
+      username: '{{ nodepool_raxflex_username }}'
+      password: '{{ nodepool_raxflex_key }}'
       user_domain_name: rackspace_cloud_domain
-    interface: public
-    identity_api_version: '3'
   ovh:
     profile: ovh
     # OVH has a weird new ipv6 setup that we can't handle properly

playbooks/zuul/templates/group_vars/control-plane-clouds.yaml.j2

@@ -6,9 +6,15 @@ clouds:
   openstackci_rax_username: user
   openstackci_rax_key: apikey
   openstackci_rax_project_id: project
+  opendevci_raxflex_username: user
+  opendevci_raxflex_key: apikey
+  opendevci_raxflex_project_id: project
   openstackjenkins_rax_username: user
   openstackjenkins_rax_key: apikey
   openstackjenkins_rax_project_id: project
+  opendevzuul_raxflex_username: user
+  opendevzuul_raxflex_key: apikey
+  opendevzuul_raxflex_project_id: project
   openstackjenkins_ovh_username: user
   openstackjenkins_ovh_password: password
   openstackjenkins_ovh_project_name: project

playbooks/zuul/templates/group_vars/nodepool.yaml.j2

@@ -33,6 +33,9 @@ nodepool_rackspace_username: user
 nodepool_rackspace_key: apikey
 nodepool_rackspace_password: password
 nodepool_rackspace_project: project
+nodepool_raxflex_username: user
+nodepool_raxflex_key: apikey
+nodepool_raxflex_project: project
 nodepool_ovh_username: user
 nodepool_ovh_password: password
 nodepool_ovh_project: project