Add test for run virtlet VM

Added test for run VM inside virtlet pod
Refactored deploy config for virtlet pod

Change-Id: I38d51b18030c9147168f6d0b2bd815c56b021231
Reviewed-on: https://review.gerrithub.io/364662
Reviewed-by: Dennis Dmitriev <dis.xcom@gmail.com>
Tested-by: Dennis Dmitriev <dis.xcom@gmail.com>
diff --git a/tcp_tests/helpers/ext.py b/tcp_tests/helpers/ext.py
index 518f483..3d11d6e 100644
--- a/tcp_tests/helpers/ext.py
+++ b/tcp_tests/helpers/ext.py
@@ -26,6 +26,7 @@
 UNDERLAY_NODE_ROLES = enum(
     'salt_master',
     'salt_minion',
+    'k8s_virtlet',
 )
 
 NETWORK_TYPE = enum(