This is being added so that metrics sent to HCP can be augmented with the source node's ID.
Opting not to add this to stats_tag out of caution, since it would increase the cardinality of metrics emitted by Envoy for all users.
There is no functional impact to Envoy expected from this change.
Fix issue where TLS configuration was ignored for unix sockets in consul connect envoy.
Disable xds check on bootstrap mode and change check to warn only.
Dan Stough
Freddy
Derek Menteer