Ignore etcd files downloaded to files/ dir

Change-Id: Ic1458a612ccdefdcc34880529a259513135fa7a1
diff --git a/.gitignore b/.gitignore
index 7967e14..d2c127d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,6 +24,7 @@
 files/get-pip.py*
 files/ir-deploy*
 files/ironic-inspector*
+files/etcd*
 local.conf
 local.sh
 localrc