ext authz: add dns san support for ext authz service (#7948)
ext authz: add dns san support for ext authz service (#7948)

Adds support for DNS SAN in ext authz peer validation

Risk Level: Low
Testing: Added
Docs Changes: Added
Release Notes: N/A

Signed-off-by: Rama Chavali <rama.rao@salesforce.com>

Mirrored from https://github.com/envoyproxy/envoy @ d4dc0a5b74acd42aafaaef8bb9c4ebed832674bd

lyft/envoy-api,lyft/envoy-api,lyft/envoy-api