Extract granular log handler from SOTA and fix mocking in unit tests

[gblewis1]

PULL DESCRIPTION

This PR extracts a 'granular log handler' from sota.py and fixes mocking of its unit tests so
they will run as non-root. Previously, they were trying to modify files under /var/....

Impact Analysis

Info	Please fill out this column
Root Cause	docker test container runs tests as root
Jira ticket

CODE MAINTAINABILITY

• Added required new tests relevant to the changes
• Updated Documentation as relevant to the changes
• PR change contains code related to security
• PR introduces changes that break compatibility with other modules/services (If YES, please provide description)
• Run go fmt or format-python.sh as applicable
• Update Changelog
• Integration tests are passing
• If Cloudadapter changes, check Azure connectivity manually

Code must act as a teacher for future developers

[gblewis1]

@yengliong93 please review

[gblewis1]

Integration tests running

[yengliong93]

@gblewis1 LGTM. The integration test is failing due to the coverage hasn't met the target.