Allow backend host and Port configurable

[avilatusell]

The default_host = "su1.3scale.net".
To work with on-prem version, the host and the port would need to be configurable.

[EricWittmann]

This appears to already be supported by the ServiceApiDriver class. The following constructors exist:

ServiceApiDriver()
ServiceApiDriver(String::provider_key)
ServiceApiDriver(String::provider_key, boolean::useHttps)
ServiceApiDriver(String::provider_key, String::host)
ServiceApiDriver(String::provider_key, String::host, boolean::useHttps)

The last two variants allow a custom host to be used (rather than the default which is su1.3scale.net. The port can be passed in as part of the host. For example, you could do this:

ServiceApiDriver driver = new ServiceApiDriver(KEY, "myserver.foo.com:8080");

Or if you were using https on a custom port you could do this:

ServiceApiDriver driver = new ServiceApiDriver(KEY, "myserver.foo.com:8443", true);

This isn't great, admittedly. The code just creates a string and then uses that to create a URL, which isn't the best way to connect to a server, but it DOES work.

I could update the documentation (readme) if that's helpful. Or if major improvements to this code are desired, I could spend some time bettering it. :)

[avilatusell]

@EricWittmann Thank you very much! yes, a major improvement would be needed. It would be very helpful if you had some time for bettering it :-)
We can take care of the documentation.

[EricWittmann]

OK I'll leave the documentation to you, then. :) I'll hold off any any significant changes for later, and only focus on minimal changes required for this upcoming on-prem release. We should save any breaking changes I might make for a new major version of the plugin.

So I consider this Issue as "done" from a coding perspective. But perhaps it should remain open and assigned to @avilatusell until the docs are updated?

[avilatusell]

OK, thanks! @EricWittmann