Ensure nova-compute service start after libvirtd

This patch aims to ensure that the nova-compute systemd service is
started only after the libvirtd systemd service.

Closes-Bug: 1780011
Co-Authored-By: kaiokassiano <kaiokmo@lsd.ufcg.edu.br>
Change-Id: Ie9b6d83d4a9573be96e050376f756e97895b6e67

defaults/main.yml

@@ -481,6 +481,10 @@ nova_services:
     start_order: 6
     execstarts: "{{ nova_bin }}/nova-compute"
     execreloads: "/bin/kill -HUP $MAINPID"
+    after_targets:
+      - libvirtd.service
+      - syslog.target
+      - network.target
   nova-conductor:
     group: nova_conductor
     service_name: nova-conductor

tasks/main.yml

@@ -135,6 +135,7 @@
     name: systemd_service
     private: true
   vars:
+    systemd_after_targets: "{{ service_var.after_targets | default(['syslog.target', 'network.target']) }}"
     systemd_user_name: "{{ nova_system_user_name }}"
     systemd_group_name: "{{ nova_system_group_name }}"
     systemd_tempd_prefix: openstack