Universal role for installing supervisord / CentOS6-7

Each program's config shall lie in /etc/supervisord.d in it's own file.

Supervisor rotates it's log files so no need to setup logrotate.

Supported vars:

• svd_programs (default: []) - array composed of:
  • name - name of the program used for file naming, etc.
  • command
  • owner
  • directory
  • log_directory
  • autostart (default: true)
  • autorestart (default: true)
  • exitcodes (default: '0,2')