Add ansible-role-os-manila-mount to Terraform

This role is included in the inventory, but never applied by the
Terraform.

Author: MoteHue

terraform/github/terraform.tfvars.json

@@ -4,6 +4,7 @@
     "Ansible": [
       "ansible-role-libvirt-host",
       "ansible-role-libvirt-vm",
+      "ansible-role-os-manila-mount",
       "drac",
       "ansible-role-luks",
       "ansible-role-sriov",