Update nova ephemeral volume group

Related-Prod: PRODX-3456
Change-Id: I1913abec90fa1c4082c14015c4592eb76f2ceafe
diff --git a/de/heat-templates/scripts/instance_boot.sh b/de/heat-templates/scripts/instance_boot.sh
index 97f55af..4a85ecb 100644
--- a/de/heat-templates/scripts/instance_boot.sh
+++ b/de/heat-templates/scripts/instance_boot.sh
@@ -203,7 +203,7 @@
         #adding short sleep to give time for service to start
         sleep 3
         pvcreate /dev/loop0
-        vgcreate nova-vg /dev/loop0
+        vgcreate nova-vol /dev/loop0
     fi
 }