Update B300-E7 model

PROD-37077

Change-Id: Ic3d79a338e88864e40d2cacd4c656012d9ed84c2
diff --git a/tcp_tests/templates/bm-b300-e7-cicd-pike-ovs-maas/underlay.hot b/tcp_tests/templates/bm-b300-e7-cicd-pike-ovs-maas/underlay.hot
index 796a351..27451ea 100755
--- a/tcp_tests/templates/bm-b300-e7-cicd-pike-ovs-maas/underlay.hot
+++ b/tcp_tests/templates/bm-b300-e7-cicd-pike-ovs-maas/underlay.hot
@@ -75,7 +75,7 @@
     properties:
       env_name: { get_param: env_name }
       mcp_version: { get_param: mcp_version }
-      cfg01_flavor: { get_param: cfg_flavor }
+      cfg01_flavor: re.jenkins.slave.large
       availability_zone: { get_param: bm_availability_zone }
       management_net: 'system-phys-430'
       management_subnet_cfg01_ip: { get_param: management_subnet_cfg01_ip }