Pathways/Intelligent defaults integration (aws#894)

Co-authored-by: Balaji Sankar <[email protected]>
Co-authored-by: Ruban Hussain <[email protected]>
Co-authored-by: Balaji Sankar <[email protected]>
Co-authored-by: Ivy Bazan <[email protected]>
Co-authored-by: rubanh <[email protected]>
Co-authored-by: Namrata Madan <[email protected]>
fixes (aws#845)
fix: Make 'role' as Optional for ModelQualityMonitor and DefaultModelMonitor, and fixed PROCESSING_CONFIG_PATH (aws#849)
Fix: Certain unit tests aren't passing sagemaker_session. Modify the logic to accommodate that case (aws#850)

Author: 7 people