Set OS_CLOUD instead in stackrc

We now write clouds.yaml when configuring keystone and
can use OS_CLOUD instead. Setting OS_AUTH_URL overrides
when we want use OS_CLOUD pointing to overcloud.

Closes-bug: #1931172
Depends-On: https://review.opendev.org/c/openstack/tripleo-common/+/795225
Depends-On: https://review.opendev.org/c/openstack/tripleo-validations/+/795293
Change-Id: Ib42fc397389d8b50c740edf334fe6f281c392ec6

extraconfig/post_deploy/undercloud_post.sh

@@ -2,6 +2,7 @@
 set -eux
 
 HOMEDIR="$homedir"
+CLOUD_NAME="$cloud_name"
 USERNAME=`ls -ld $HOMEDIR | awk {'print $3'}`
 GROUPNAME=`ls -ld $HOMEDIR | awk {'print $4'}`
 
@@ -12,32 +13,14 @@ chmod 0600 $HOMEDIR/stackrc
 cat > $HOMEDIR/stackrc <<-EOF_CAT
 # Clear any old environment that may conflict.
 for key in \$( set | awk -F= '/^OS_/ {print \$1}' ); do unset "\${key}" ; done
-
-export OS_AUTH_TYPE=password
-export OS_PASSWORD=$admin_password
-export OS_AUTH_URL=$auth_url
-export OS_USERNAME=admin
-export OS_PROJECT_NAME=admin
-export COMPUTE_API_VERSION=1.1
-export NOVA_VERSION=1.1
-export OS_NO_CACHE=True
-export OS_CLOUDNAME=undercloud
-export OS_IDENTITY_API_VERSION='3'
-export OS_PROJECT_DOMAIN_NAME='Default'
-export OS_USER_DOMAIN_NAME='Default'
+export OS_CLOUD=$CLOUD_NAME
 EOF_CAT
 
-if [ -n "$internal_tls_ca_file" ]; then
-    cat >> $HOMEDIR/stackrc <<-EOF_CAT
-export OS_CACERT="$internal_tls_ca_file"
-EOF_CAT
-fi
-
 cat >> $HOMEDIR/stackrc <<-"EOF_CAT"
 # Add OS_CLOUDNAME to PS1
 if [ -z "${CLOUDPROMPT_ENABLED:-}" ]; then
     export PS1=${PS1:-""}
-    export PS1=\${OS_CLOUDNAME:+"(\$OS_CLOUDNAME)"}\ $PS1
+    export PS1=\${OS_CLOUD:+"(\$OS_CLOUD)"}\ $PS1
     export CLOUDPROMPT_ENABLED=1
 fi
 EOF_CAT

extraconfig/post_deploy/undercloud_post.yaml

@@ -115,17 +115,14 @@ conditions:
     - tls_enabled
 
 resources:
-
   UndercloudPostConfig:
     type: OS::Heat::SoftwareConfig
     properties:
       group: script
       inputs:
-        - name: deploy_identifier
-        - name: admin_password
-        - name: auth_url
-        - name: internal_tls_ca_file
+        - name: ssl_certificate
         - name: cloud_name
+        - name: homedir
       config: {get_file: ./undercloud_post.sh}
 
   UndercloudPostDeployment:
@@ -136,15 +133,8 @@ resources:
       config: {get_resource: UndercloudPostConfig}
       input_values:
         ssl_certificate: {get_param: SSLCertificate}
-        homedir: {get_param: UndercloudHomeDir}
-        admin_password: {get_param: AdminPassword}
         cloud_name: {get_param: UndercloudCloudName}
-        internal_tls_ca_file:
-          if:
-          - ca_file_enabled
-          - {get_param: InternalTLSCAFile}
-          - ''
-        auth_url: {get_param: [EndpointMap, KeystonePublic, uri_no_suffix]}
+        homedir: {get_param: UndercloudHomeDir}
 
   UndercloudPostPyConfig:
     type: OS::Heat::SoftwareConfig