Add metadata field to Cluster in CDS (#287)
Add metadata field to Cluster in CDS (#287)

We'd like to add a metadata field to CDS and have it be accessible in Envoy through ClusterInfo and anywhere else general cluster info is available.

Signed-off-by: Matt Rice <43af4ab5a8c69dd989d5d397f6c669ed106daf3b@google.com>
jrajahalme/envoy-api,jrajahalme/envoy-api,lyft/envoy-api,jrajahalme/envoy-api,lyft/envoy-api,lyft/envoy-api,jrajahalme/envoy-api