Add DEPLOY_NETWORK_MTU parameter for swarm-create-cfg-config-drive

Change-Id: If15577ae0963f5de3b3c4712b21090eb9f3f5ef2
diff --git a/jobs/pipelines/swarm-create-cfg-config-drive.groovy b/jobs/pipelines/swarm-create-cfg-config-drive.groovy
index d65d0e4..05e5eca 100644
--- a/jobs/pipelines/swarm-create-cfg-config-drive.groovy
+++ b/jobs/pipelines/swarm-create-cfg-config-drive.groovy
@@ -12,6 +12,7 @@
 smc['SALT_MASTER_DEPLOY_IP'] = "${SALT_MASTER_DEPLOY_IP}"
 smc['DEPLOY_NETWORK_GW'] = "${DEPLOY_NETWORK_GW}"
 smc['DEPLOY_NETWORK_NETMASK'] = "${DEPLOY_NETWORK_NETMASK}"
+smc['DEPLOY_NETWORK_MTU'] = "${DEPLOY_NETWORK_MTU}"
 smc['DNS_SERVERS'] = "${DNS_SERVERS}"
 smc['PIPELINES_FROM_ISO'] = '${PIPELINES_FROM_ISO}'
 smc['PIPELINE_REPO_URL'] = '${PIPELINE_REPO_URL}'