Add deployment of tacker-scheduler

There's a long-standing bug from 2017 that tacker requires scheduler
service to run. However it seemed no real interest to tacker among OSA
users. Nevertheless it's better late then never fixing it.

Change-Id: I70264ef5ffd6ebb851e4d3c4c86c28ea222f7139
Closes-Bug: #1710874

defaults/main.yml

@@ -111,6 +111,7 @@ tacker_db_connection_recycle_time: "{{ openstack_db_connection_recycle_time | de
 tacker_bind_address: "{{ openstack_service_bind_address | default('0.0.0.0') }}"
 tacker_service_port: 9890
 tacker_program_name: tacker-server
+tacker_conductor_program_name: tacker-conductor
 
 ## Service Type and Data
 tacker_service_region: "{{ service_region | default('RegionOne') }}"
@@ -129,6 +130,21 @@ tacker_service_publicuri_proto: "{{ openstack_service_publicuri_proto | default(
 tacker_service_adminuri_proto: "{{ openstack_service_adminuri_proto | default(tacker_service_proto) }}"
 tacker_service_internaluri_proto: "{{ openstack_service_internaluri_proto | default(tacker_service_proto) }}"
 
+tacker_services:
+  tacker-server:
+    group: tacker_server
+    service_name: "{{ tacker_service_name }}"
+    enabled: yes
+    state: started
+    execstarts: "{{ tacker_bin }}/{{ tacker_program_name }} {{ tacker_config_options|default('') }}"
+    config_overrides: "{{ tacker_init_config_overrides }}"
+  tacker-conductor:
+    group: tacker_server
+    service_name: "{{ tacker_conductor_program_name }}"
+    enabled: yes
+    execstarts: "{{ tacker_bin }}/{{ tacker_conductor_program_name }} {{ tacker_conductor_config_options|default('') }}"
+    config_overrides: "{{ tacker_conductor_init_config_overrides }}"
+
 ## Barbican service
 barbican_keys_backend: false
 
@@ -161,7 +177,9 @@ tacker_pip_packages:
   - "git+{{ tacker_git_repo }}@{{ tacker_git_install_branch }}#egg=tacker"
 
 tacker_config_options: --config-file {{ tacker_etc_dir }}/tacker.conf
+tacker_conductor_config_options: "{{ tacker_config_options }}"
 tacker_init_config_overrides: {}
+tacker_conductor_init_config_overrides: {}
 
 ## tacker config
 tacker_heat_stack_retires: 60

tasks/main.yml

@@ -112,12 +112,7 @@
     systemd_BlockIOAccounting: true
     systemd_MemoryAccounting: true
     systemd_TasksAccounting: true
-    systemd_services:
-      - service_name: "{{ tacker_service_name }}"
-        enabled: yes
-        state: started
-        execstarts: "{{ tacker_bin }}/{{ tacker_program_name }} {{ tacker_config_options|default('') }}"
-        config_overrides: "{{ tacker_init_config_overrides }}"
+    systemd_services: "{{ tacker_services.values() }}"
   tags:
     - systemd-service
     - tacker-install