gnmic subscribe

Subscribe to a gnmic network device state updates. More information: https://gnmic.kmrd.dev/cmd/subscribe.

• Subscribe to target state updates under the subtree of a specific path:
  gnmic --address {{ip:port}} subscribe --path {{path}}
• Subscribe to a target with a sample interval of 30s (default is 10s):
  gnmic -a {{ip:port}} subscribe --path {{path}} --sample-interval 30s
• Subscribe to a target with sample interval and updates only on change:
  gnmic -a {{ip:port}} subscribe --path {{path}} --stream-mode on-change --heartbeat-interval 1m
• Subscribe to a target for only one update:
  gnmic -a {{ip:port}} subscribe --path {{path}} --mode once
• Subscribe to a target and specify response encoding (json_ietf):
  gnmic -a {{ip:port}} subscribe --path {{path}} --encoding json_ietf