admin: display command line options in server info end point (#5015)
admin: display command line options in server info end point (#5015)

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

Mirrored from https://github.com/envoyproxy/envoy @ 1623901e0a86cc8b474492ce44c0b86df7989ea9

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