account abstraction - make only url or transport required

[tuna1207]

Motivation and Context

Make account abtraction provider only require url or transport param

Jira Link:

Description

Make account abtraction provider only require url or transport param in config and expose transport config

How has this been tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project. (run lint)
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[chaitanyapotti]

lgtm