[COOK-2157] Add attributes for inet_http_server

Supervisor has a web interface for some of the supervisorctl commands. It's configuration settings are described here:
	http://supervisord.org/configuration.html#inet-http-server-section-settings
Those settings can now be optionally enabled or disabled using node attributes.
[COOK-2157] Add attributes for supervisord logs

Expose a few more of the supported options for configuring logging from the management process (rather than the child programs) as described here:
	http://supervisord.org/configuration.html#supervisord-section-values

Also, add some whitespace for template readability.
Merge branch 'COOK-2157'