[VOL-3007] Reports execution time as a sum of the previous tests for correct plotting

Change-Id: I65d41fc58818eb013b9349f75a650a0314baece9
diff --git a/.gitignore b/.gitignore
index 7baae54..8c461ee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,6 @@
 
 # IDEs
 .idea
+
+# other outputs
+tests/scale/plots