VOLTHA-2239 Wrap the system test into Makefile command

Change-Id: I98cd329c1649d05274f611307ff712cfe8f43cd1
diff --git a/.gitignore b/.gitignore
index a9517c0..72fa7bc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,8 +2,6 @@
 vst_venv
 
 # robot framework output
-output.xml
-report.xml
-log.html
-report.html
+*.html
+*.xml
 *.pyc