Fix binding when user sets HTEx worker ports manually

[WardLT]

Description

Fixes the creation of the TCP url when the ports used by HTEx workers are fixed.

The tcp_url helper function from addresses.py was only appending the port number when the address was not "*".

Changed Behaviour

HTEx works with the ports fixed. Not sure when it was broken

I added a unit test which shows that the current code fails when launching an HTEx interchange with user-set ports.

Fixes

None (yet? should I make one?)

Type of change

• Bug fix

[WardLT]

Might I suggest @yadudoc for the review? I altered a function he wrote a few months ago

[benclifford]

you might add a case into parsl/tests/unit/test_address.py which more directly tests the tcp_url function

[khk-globus]

Thanks for adding the test. We're working through a build error at the moment, but I'll merge this once that gets sorted. Thanks!