Gather hypervisor facts in parallel pre-scheduling

ansible/deploy.yml

@@ -18,6 +18,10 @@
             group: "{{ libvirt_pool_group }}"
         libvirt_host_require_vt: "{{ libvirt_require_vt }}"
 
+# Ensure we have facts about all hypervisors before scheduling begins.
+- hosts: hypervisors
+  gather_facts: true
+
 - hosts: localhost
   tasks:
     - include_tasks: schedule.yml

ansible/schedule.yml

@@ -1,11 +1,4 @@
 ---
-# Ensure we have facts about all hypervisors before scheduling begins.
-- name: Gather facts from hypervisors
-  setup:
-  delegate_to: "{{ item }}"
-  delegate_facts: true
-  loop: "{{ groups['hypervisors'] }}"
-
 # Creates a dict mapping each hypervisor's hostname to its hostvars, to be used
 # during scheduling.
 - name: Collect hypervisor hostvars