gitignore: Add tags file am: 8b006fbb18 am: 8f1428ab3a

Change-Id: Ibc426b098c587e57fee386624861d6a0aa230c20
diff --git a/.gitignore b/.gitignore
index 6df12eb..fdc0f52 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,7 @@
 *.pyc
 *.so
 *~
+tags
 
 # Anything created as a result of running a test
 results.*/