add the ability to set the authMethodName

[Joshhw]

Is your enhancement request related to a problem? Please describe.
Many authN/authZ setups use tokens. But the way pulsar relies on determining which authentication class to call requires a user to configure the authMethodName on the Authentication class on the client side. This is fine for java, but for the python client and many others this leads to difficulties and duplicating much of the AuthenticationToken class. If we had the ability to set the authMethodName that would be easier for customized authentication/authorization in Pulsar

Describe the solution you'd like
the ability to change the authMethodName on AuthenticationToken to tell pulsar which custom classes are to be used.

Describe alternatives you've considered
I've been building pulsar-client libraries that extend the AuthenticationToken class.

[codelipenghui]

The issue had no activity for 30 days, mark with Stale label.

[tisonkun]

Closed as stale. Please create a new issue if it's still relevant to the maintained versions.