Implement Master API

[oubiwann]

Functions required:

• Master Protocol
  • bring-down-machines
  • bring-up-machines
  • create-volumes
  • destroy-volumes
  • get-agents
  • get-frameworks
  • get-maintenance-schedule
  • get-maintenance-status
  • get-quota
  • get-registry
  • get-roles
  • get-state-summary
  • get-tasks
  • redirect
  • remove-quota
  • reserve
  • set-quota
  • teardown-framework
  • unreserve
  • update-maintenance-scheduler
  • update-role-weights
• Config Protocol
  • get-version
  • get-flags
• Debug Protocol
  • start-profiler
  • stop-profiler
• Files Protocol
  • browse
  • debug
  • download
  • read
• Health Protocol
  • get-health
  • get-metrics
  • get-state
  • get-system-stats

Part of epic #2