* Nuage module and unit tests with requested changes
* Cleanup of imports
* Adding check on python version
* Adding import try and catch wrappers
* Cleanup of requirements and adding integration tests
* Using pypi package for simulator
* Cleanup of requirements and adding integration tests
* Adding aliases for integration tests
* Adding module to import sanity test skip list
* Revert "Adding module to import sanity test skip list"
This reverts commit eab23af8c5.
* Adding check for importlib and cleanup of requirements
