[gitignore][cipd] Ignore .cipd

Test: N/A
Change-Id: Ife6524fc6306d129d97e76965feca77625794f4a
diff --git a/.gitignore b/.gitignore
index a6637c3..de820df 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,5 +17,6 @@
 *~
 
 cipd.gni
+.cipd/*
 last-update
 third_party/