Bazel upgrade 0.8.0-rc4

Change-Id: I59c228ce2a7fe62d95b64e8b6bde0b8fc07f8641
diff --git a/tools/bazel b/tools/bazel
index d08bd00..8a442e5 100755
--- a/tools/bazel
+++ b/tools/bazel
@@ -24,7 +24,7 @@
   exec "${BAZEL_OVERRIDE}" "$@"
 fi
 
-readonly VERSION="0.7.0-971"
+readonly VERSION="201711232100+e0fe5d9"
 
 readonly DOWNLOAD_DIR="$(dirname "${BASH_SOURCE[0]}")/../bazel-downloads"
 # Directory to unpack bazel into.  This must change whenever bazel changes.