update gatewayd.yaml configuration addresses to use 0.0.0.0 instead of localhost (gatewayd-io#552)

* Fix IP binding issue to make application accessible outside the container

Author: sinadarbouy

gatewayd.yaml

@@ -23,7 +23,7 @@ loggers:
 metrics:
  default:
  enabled: True
- address: localhost:9090
+ address: 0.0.0.0:9090
  path: /metrics
  readHeaderTimeout: 10s # duration, prevents Slowloris attacks
  timeout: 10s # duration
@@ -68,6 +68,6 @@ servers:
 
 api:
  enabled: True
- httpAddress: localhost:18080
+ httpAddress: 0.0.0.0:18080
  grpcNetwork: tcp
- grpcAddress: localhost:19090
+ grpcAddress: 0.0.0.0:19090