Use the right hypervisor name for ovh hosts

We set the hypervisor name to 'qemu' instead of qemu, so the
templated fact is "'qemu'", which is an incorrect hypervisor name.

Change-Id: Ib07a93db1d0f826701fd58f95243eb17ef017e4b

common-tasks/test-set-nodepool-vars.yml

@@ -30,7 +30,7 @@
         echo "pip_default_index=${NODEPOOL_PYPI_MIRROR}"
         echo "pip_wheel_mirror=${NODEPOOL_WHEEL_MIRROR}"
         if [[ ${NODEPOOL_PYPI_MIRROR} == *.ovh.* ]]; then
-          echo "nova_virt_type='qemu'"
+          echo "nova_virt_type=qemu"
         fi
       args:
         executable: /bin/bash