Rework interface roles to match cookiecutter template options

Change-Id: I26ddff3af840b805319ba2805e1cc80af22a5735
Reviewed-on: https://review.gerrithub.io/377228
Reviewed-by: Dennis Dmitriev <dis.xcom@gmail.com>
Tested-by: Dennis Dmitriev <dis.xcom@gmail.com>
diff --git a/tcp_tests/environment/environment_template/readme.txt b/tcp_tests/environment/environment_template/readme.txt
index 1804bb0..e364476 100644
--- a/tcp_tests/environment/environment_template/readme.txt
+++ b/tcp_tests/environment/environment_template/readme.txt
@@ -92,9 +92,9 @@
       - linux_system_codename_xenial
       interfaces:
         enp3s0f0:
-          role: management_single
+          role: single_mgm
         enp3s0f1:
-          role: control_bond0
+          role: bond0_ab_nondvr_vxlan_ctl_mesh
 ```
 
 Virtual Control Plane node example:
@@ -107,5 +107,5 @@
       - linux_system_codename_xenial
       interfaces:
         ens3:
-          role: control_vcp_single
+          role: single_ctl
 ```