Upgrade metrics-graphite to 4.0.3

To align with the version of metrics-core used in core Gerrit
since 2.14.11.

Change-Id: I352f5c413579593b9af1d61152be93d1c89383c6
1 file changed
tree: ed4180c48ac3ff47f8226b3f2e4a21914593463c
  1. BUILD
  2. external_plugin_deps.bzl
  3. src/