master.conf

reactor:
  - 'minion_start':
    - /srv/reactor/on_start.sls

orchestration-prerequisites.sls

saltutil.sync_all:
  salt.function:
    - tgt: '*'
    - reload_modules: True 

python-base:
  salt.state:
    - tgt: '*'
    - sls: python-base

python-base.sls

python-pip:
  pkg.installed:
    - name: python-pip

python-apt:
  pkg.installed:
    - name: python-apt

python-hwinfo:
  pip.installed:
    - name: python-hwinfo

reactor-onstart.sls

on_start:
  runner.state.orchestrate:
    - arg:
      - orchestration.prerequisites