Port should always default to `4200` if not specified

[proddata]

It is confusing that without providing a dedicated port, we don't default to 4200 in all cases, e.g. when specifying to use TLS

e.g.

crash --hosts 'host' --> http://host:4200
crash --hosts 'http://host' --> http://host:80
crash --hosts 'https://host' --> https://host:443
crash --hosts 'https://host:4200' --> https://host:4200

they should all default to port 4200

crash --hosts 'host' --> http://host:4200
crash --hosts 'http://host' --> http://host:4200
crash --hosts 'https://host' --> https://host:4200
crash --hosts 'https://host:4200' --> https://host:4200

---

This probably will need some improvement here as we just split : 🙈

crash/crate/crash/command.py

Lines 530 to 536 in 76e3637

	if ':' in host_or_port:
	if len(host_or_port) == 1:
	return 'localhost:4200'
	elif host_or_port.startswith(':'):
	return 'localhost' + host_or_port
	return host_or_port
	return host_or_port + ':4200'