[CORD-2289] add ng4T synchronizer and playbooks

Change-Id: Icf2c8095233a8748c9398f1840a580eaeff6bdb8
(cherry picked from commit b6eba07b7c2344af5aacfa27ce7a2aedba719ee8)
diff --git a/xos/models/venb.xproto b/xos/models/venb.xproto
index 591e9cb..6c92171 100644
--- a/xos/models/venb.xproto
+++ b/xos/models/venb.xproto
@@ -3,8 +3,8 @@
 
 message VENBService (Service){
     option verbose_name = "Virtual eNodeB Service";
-    required string login_user = 1 [help_text = "vENB VM login user", default = "ubuntu", max_length = 32, content_type = "stripped", null = False, db_index = False, blank = False];
-    required string login_password = 2 [help_text = "vENB VM login password", default = "cfguser", max_length = 32, content_type = "stripped", null = False, db_index = False, blank = False];
+    required string login_user = 1 [help_text = "vENB VM login user", default = "ng40", max_length = 32, content_type = "stripped", null = False, db_index = False, blank = False];
+    required string login_password = 2 [help_text = "vENB VM login password", default = "ng40", max_length = 32, content_type = "stripped", null = False, db_index = False, blank = False];
     required string tas_ip = 3 [help_text = "TAS IP address", default = "103.0.0.100", max_length = 32, null = False, db_index = False, blank = False];
     required string ntp_ip = 4 [help_text = "NTP server IP address", default = "193.0.0.222", max_length = 32, null = False, db_index = False, blank = False];
 }