Support alternative AMQP ports

[chris-janidlo]

Description

[sc-27144]

Fixes # (issue)

Type of change

• New feature (non-breaking change that adds functionality)

[shortcut-integration]

This pull request has been linked to Shortcut Story #27144: Support configuring an endpoint to use AMQPS over 443.

[chris-janidlo]

@khk-globus brought up some good use-cases for ports that are outside of what the web service supports, so I dropped the code that restricts ports in favor of just documenting which ones we support. (Still need to verify that the ones mentioned in the docs here are accurate.)

[khk-globus]

I'm wondering if it would be easier to modify just the initial connection string? That is, when we receive the URL, do the urlparse()/urlunparse() dance. That would avoid the need to change any of the code in rabbit_mq/, interchange.py, or executor.py.

[khk-globus]

Woo woo!