Refactor the Automated Test Runner, and add retry logic (#605)

* Refactor Automated Test Runner

* Add logic to set test attempts

* Add tests to database

* Update AutomatedTestRunner.cs

* Update build_testapps.json

* Update test_validation.py

* Revert "Update test_validation.py"

This reverts commit 7e6f3a7.

* Revert "Update build_testapps.json"

This reverts commit 034d621.

* Revert "Update AutomatedTestRunner.cs"

This reverts commit 1edbb23.

* Revert "Add tests to database"

This reverts commit 7093165.

* Update AutomatedTestRunner.cs

Author: a-maurice