Ignore all bazel-* folders

Change-Id: Iffe91d125418b272567ebcb782bed3c0eefc0f5a
diff --git a/.gitignore b/.gitignore
index caafe06..05423f6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,8 +4,4 @@
 /.settings
 /local.properties
 *.pyc
-/bazel-bin
-/bazel-genfiles
-/bazel-out
-/bazel-reviewers
-/bazel-testlogs
+/bazel-*