Revert "Fixes for deploying nova-less undercloud"

This reverts commit e0bb2cc82e.

Closes-Bug: #1842074
Change-Id: Ie60d795e264ba6ce3d0984a5df2ae5ddd8a5d692

deployment/placement/placement-api-container-puppet.yaml

@@ -209,6 +209,7 @@ outputs:
                 -
                   - /var/lib/config-data/placement/etc/my.cnf.d/tripleo.cnf:/etc/my.cnf.d/tripleo.cnf:ro
                   - /var/lib/config-data/placement/etc/placement/:/etc/placement/:ro
+                  - /var/lib/config-data/nova/etc/nova/:/etc/nova/:ro
             environment:
               - PLACEMENT_USER=placement
               - NOVA_API_USER=nova_api
@@ -228,9 +229,8 @@ outputs:
                   - '='
                   -  - 'NOVA_API_PASS'
                      - {get_param: NovaPassword}
-            # NOTE(lyarwood): We can swallow return codes of 0, 3, 4, 5 as they
-            # suggest this is a fresh deployment with no data to extract
-            # (or that placemant is being deployed without nova). The
+            # NOTE(lyarwood): We can swallow return codes of 0, 3 and 4 as they
+            # suggest this is a fresh deployment with no data to extract. The
             # current list of return codes provided by the migrate script is:
             # 0: Success
             # 1: Usage error
@@ -239,8 +239,7 @@ outputs:
             # 4: No data to migrate from nova (new deployment)
             # 5: Unable to connect to one or both databases
             # 6: Unable to execute placement's CLI commands
-            exit_codes: [0, 3, 4, 5]
-            command: "/usr/bin/bootstrap_host_exec placement su placement -s /bin/bash -c 'cd /tmp && /usr/share/placement/mysql-migrate-db.sh --migrate -'"
+            command: "/usr/bin/bootstrap_host_exec placement su placement -s /bin/bash -c 'cd /tmp && /usr/share/placement/mysql-migrate-db.sh --migrate -; ret=$?; if [ $ret -ne 0 ] && [ $ret -ne 3 ] && [ $ret -ne 4 ]; then exit $ret; else exit 0; fi'"
           placement_api_db_sync:
             start_order: 1
             image: *placement_api_image

environments/undercloud-disable-nova.yaml

@@ -1,13 +1,10 @@
-# This heat environment can be used to disable the nova/glance services used on
-# the undercloud. It is used for underclouds which only use deployed-server
+# This heat environment can be used to disable the nova services used on the
+# undercloud. It is used for underclouds which only use deployed-server
 # (optionally using ironic provisioned nodes).
 
-parameter_defaults:
-  MistralExecutorVolumes: []
 resource_registry:
   OS::TripleO::Services::NovaApi: OS::Heat::None
   OS::TripleO::Services::NovaConductor: OS::Heat::None
   OS::TripleO::Services::NovaIronic: OS::Heat::None
   OS::TripleO::Services::NovaMetadata: OS::Heat::None
-  OS::TripleO::Services::NovaScheduler: OS::Heat::None
-  OS::TripleO::Services::GlanceApi: OS::Heat::None
+  OS::TripleO::Services::NovaScheduler: OS::Heat::None