[core-http] Should we still use RequestPolicyOptions?

[jeremymeng]

Currently it only contains one private property:

_logger: HttpPipelineLogger

the constructor of RequstPolicy takes in RequestPolicyOptions. However, none of our core-http built-in request policy factory methods are passing in an option for the logger. It is not possible to pass in a logger in current Storage request policy factories either.

Also HttpPipelineLogger is not directly compatible with our core-logger.

So should we remove it (breaking change) and consider using core logger if possible?

[xirzec]

Done as part of #9468