modified:   picostack/deamon_app.py
modified:   picostack/process_spawn.py
modified:   picostack/settings.py
modified:   picostack/textwrap_util.py
modified:   picostack/vm_manager.py
modified:   picostack/vms/models.py
modified:   picostk
- Extended config validation to include logs and pidfiles folder exist.
- Implemented state transition workflow from launching to running as well as
  from terminating to complete stop of VM instances.