.gitignore: ignore shadow_config.param.ini

BUG=None
TEST=None

Change-Id: I3cc054108d5c9851fcef534c83f9db9323634f92
Reviewed-on: https://chromium-review.googlesource.com/675673
Commit-Ready: Prathmesh Prabhu <pprabhu@chromium.org>
Tested-by: Prathmesh Prabhu <pprabhu@chromium.org>
Reviewed-by: Allen Li <ayatane@chromium.org>
diff --git a/.gitignore b/.gitignore
index 09b8249..c549894 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,6 +45,7 @@
 ExternalSource
 /frontend/client/www/
 /shadow_config.ini
+/shadow_config.param.ini
 /site-packages/
 monitor_db.pid
 server/cros/chaos_shadow_ap_list.conf