Override global command list

[deven96]

Currently the metrics are defined globally and all hosts attempt to run them, however we would like to be able to extend commands for a single host by doing something like

hosts:
  children:
    "0.0.0.0":
      metrics:
        docker:
      connection:
        type: ssh 
        username: ci-dev
        port: 2222
        private_key_path: "/home/diretnan/Projects/Personal/saido/ssh-key/ci/ci-test-key"
    "localhost":
      connection:
        type: local
metrics:
  custom: "cat /proc/uptime"
  loadavg:

poll-interval: 10

Docker metric (along with custom and loadavg) would only run for 0.0.0.0 while Custom and Loadavg would be run for the rest i.e localhost

[deven96]

@Nurudeen38 I've added the individual metrics extension.... but now the metric I added for just one server tends to show up for all on the frontend

[deven96]

@Nurudeen38 Also I'm still having the issue of not seeing any of my metrics except on one server