Add drivetrain tests

Change-Id: I6dc5dde5a9d2e1c5be3ef9e932e3ae725f900c00
diff --git a/cvp_checks/global_config.yaml b/cvp_checks/global_config.yaml
index 1a182ef..7072fcc 100644
--- a/cvp_checks/global_config.yaml
+++ b/cvp_checks/global_config.yaml
@@ -65,6 +65,8 @@
     "skipped_ifaces": ["bonding_masters", "lo", "veth", "tap", "cali", "qv", "qb"]}
 # mask for interfaces to skip
 
+drivetrain_version: ''
+
 # ntp test setting
 # this test may skip specific node (use fqdn)
 test_ntp_sync: