Updating VEG to current VSG and porting to 4.0

Change-Id: I96bfee869b1a137786413306dab80d7e257aee30
(cherry picked from commit 40731830c4a0c37006702647f49c625c369b1a77)
diff --git a/xos/synchronizer/run-from-api.sh b/xos/synchronizer/run-from-api.sh
index aefc463..4b303f1 100644
--- a/xos/synchronizer/run-from-api.sh
+++ b/xos/synchronizer/run-from-api.sh
@@ -1,4 +1,3 @@
-
 # Copyright 2017-present Open Networking Foundation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -14,5 +13,4 @@
 # limitations under the License.
 
 
-export XOS_DIR=/opt/xos
-python veg-synchronizer.py  -C $XOS_DIR/synchronizers/veg/veg_from_api_config
\ No newline at end of file
+python veg-synchronizer.py