Use env_setup.py

Change-Id: Ie654d86d2267ad30170dbd845cf1cff456445bc0
diff --git a/.gitignore b/.gitignore
index 8810012..b171302 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,3 +43,6 @@
 
 # CIPD
 .cipd
+
+# Setup
+env_setup/.setup.sh