Feat: Runon script

[ktechmidas]

Issue being fixed or feature implemented

A more complicated version of the bin/ssh script. This script will run the provided command on either a single instance or a full group of nodes or all nodes for a given network.

Usage: ./bin/runon -n <network> [ -g <group> ] [ <server> ] [ -c <command> ] [ -a ]

Flags:
  -n <network>  (required)
  -g <group>    (optional) e.g. hp-masternodes
  -c <command>  (optional) command to run
  -a            (optional) run on ALL servers

Example usage:
  ./bin/runon -n testnet -a -c "echo 'Hello from all' && hostname"
  ./bin/runon -n testnet -g hp-masternodes -c "echo 'Hello group' && hostname"
  ./bin/runon -n testnet hp-masternode-4 -c "sudo hostnamectl set-hostname hp-masternode-4"

What was done?

Added script

How Has This Been Tested?

Tested with basic commands that do no harm

Breaking Changes

No breaking changes

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have made corresponding changes to the documentation

For repository code-owners and collaborators only

• I have assigned this pull request to a milestone

[vivekgsharma]

LGTM