Public IPv4, slapos_version, python_version and os_type (includes kernel information)

This allow master to check for updated computers.

slapos_monitoring: create jio_storage only once for each storage and update when configuration change

Change allocation scope to close/outdated

monitoring_rjs_unsafe website for tests which allow ajax on local test http server
Add missing option on local http server
fix start of http server (address already in use)

On the UI we don't want to see infinity tickets, only the most relevant for the computers and hosting subscriptions.

slapos_monitoring_ui_test: fix test class name and make local monitor backend server for serve files