[CORD-2460]
Update and fix build documentation, fix variables with new TOSCA engine

Change-Id: I21b5e3aa2abda0111a72d1a994140ab2894296ce
diff --git a/roles/test-mcord-base/tasks/main.yml b/roles/test-mcord-base/tasks/main.yml
index 193c4d7..aa5ae9a 100644
--- a/roles/test-mcord-base/tasks/main.yml
+++ b/roles/test-mcord-base/tasks/main.yml
@@ -1,4 +1,4 @@
-
+---
 # Copyright 2017-present Open Networking Foundation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -13,8 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
----
 # test-mcord-base/tasks/main.yml
 # Run tests to check that the base elements of M-CORD are present