Update .gitignore to ignore unit testing artifacts

Change-Id: I09ebfcef3cf3064193edfe549a7bd081ae8a2697
diff --git a/VERSION b/VERSION
index 2bf1ca5..9e5acc1 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.1.7
+1.1.8-dev0