Fix test_sctp_traffic_between_vm and test_vm_file_trf_tftp_tests

Fix tests for VM issues to work for Vcenter scenario
closes-bug: #1735341

Change-Id: I83211c22bac85fcd8de0d75582250f76cd568bad

configs/images.cfg

@@ -141,6 +141,12 @@ vctmpl    = ubuntu-traffic.vmtx
 vcname    = ubuntu-traffic-disk1.vmdk
 name_docker = ubuntu-traffic-docker
 
+[ubuntu-sctp]
+name      = ubuntu-sctp.vmdk.gz
+username  = ubuntu
+password  = ubuntu
+flavor    = contrail_flavor_small
+
 [ubuntu-in-net]
 name      = ubuntu-in-net.vmdk.gz
 username  = ubuntu
@@ -204,12 +210,6 @@ location  = /images/docker/
 params    = --container-format docker --disk-format raw
 name_docker     = ubuntu-traffic-docker
 
-[ubuntu-sctp]
-name      = ubuntu-sctp.img.gz
-location  = /images/
-username  = ubuntu
-password  = ubuntu
-
 
 [ubuntu-keepalive]
 name      = ubuntu-keepalive.img.gz