Fix seed VM provision

Since I56533ead8357945a42b079fda7edbd9912fc135a (present in 7.0.0.0rc1),
seed VM provisioning fails due to a missing configdrive volume. The
problem is caused by the stackhpc.libvirt-vm role at version 1.8.0, and
the issue is described in
https://github.com/stackhpc/ansible-role-libvirt-vm/issues/45.

This change bumps the requirement for stackhpc.libvirt-vm to v1.10.0,
which includes a fix for the issue.

Change-Id: I7361510a1c9c9c25356c5abd2a68b661c6b52692
Story: 2007063
Task: 37929

releasenotes/notes/fix-seed-vm-provision-c432ebfae8bfee8b.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixes an issue with provisioning the seed VM using the stackhpc.libvirt-vm
+    role at version 1.8.0. See `story 2007063
+    <https://storyboard.openstack.org/#!/story/2007063>`__ for details.

requirements.yml

@@ -26,7 +26,7 @@
 - src: stackhpc.libvirt-host
   version: v1.3.0
 - src: stackhpc.libvirt-vm
-  version: v1.8.0
+  version: v1.10.0
 - src: stackhpc.mellanox-switch
   version: v1.0.0
 - src: stackhpc.os-images