message: Add OSS-Fuzz fuzzing badge.
  Description: Adds OSS-Fuzz fuzzing badge, see
  Risk Level:
  Testing: NA
  Docs Changes: Adds OSS-Fuzz fuzzing badge
  Release Notes: NA
diff: @@ -11,6 +11,7 @@ involved and how Envoy plays a role, read the CNCF
  [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/1266/badge)](https://bestpractices.coreinfrastructure.org/projects/1266)
  [![Azure Pipelines](https://dev.azure.com/cncf/envoy/_apis/build/status/envoyproxy.envoy.mac?branchName=master)](https://dev.azure.com/cncf/envoy/_build/latest?definitionId=2&branchName=master)
  [![CircleCI](https://circleci.com/gh/envoyproxy/envoy/tree/master.svg?style=shield)](https://circleci.com/gh/envoyproxy/envoy/tree/master)
  +[![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/envoy.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:envoy)
  [![fuzzit](https://app.fuzzit.dev/badge?org_id=envoyproxy)](https://app.fuzzit.dev/orgs/envoyproxy/dashboard)
  [![Jenkins](https://img.shields.io/jenkins/s/https/powerci.osuosl.org/job/build-envoy-master/badge/icon/.svg?label=ppc64le%20build)](http://powerci.osuosl.org/job/build-envoy-master/)
  