Merge "Use LVM_VOLUME_CLEAR if set"

Author: Jenkins

lib/nova

@@ -592,6 +592,9 @@ function create_nova_conf {
     if [[ "$NOVA_BACKEND" == "LVM" ]]; then
         iniset $NOVA_CONF libvirt images_type "lvm"
         iniset $NOVA_CONF libvirt images_volume_group $DEFAULT_VOLUME_GROUP_NAME
+        if isset LVM_VOLUME_CLEAR; then
+            iniset $NOVA_CONF libvirt volume_clear "$LVM_VOLUME_CLEAR"
+        fi
     fi
 
     if is_ssl_enabled_service glance || is_service_enabled tls-proxy; then