Change cfg flavor for bm-b300 lab

Change flavor to re.jenkins.slave.large
-increase cpu to 20
-increase ram to 32G

Change-Id: I80e52e401d0a1e5dbcea2e712c0a5b12bbcfac6d
diff --git a/tcp_tests/templates/bm-b300-cicd-queens-ovs-maas/underlay.hot b/tcp_tests/templates/bm-b300-cicd-queens-ovs-maas/underlay.hot
index f2a9ef6..da17023 100644
--- a/tcp_tests/templates/bm-b300-cicd-queens-ovs-maas/underlay.hot
+++ b/tcp_tests/templates/bm-b300-cicd-queens-ovs-maas/underlay.hot
@@ -80,7 +80,7 @@
     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-2401'
       control_net: 'system-phys-2404'