Adding optional parameters to the set_test function (#50)

* Pass tuple with file path and file content to the upload_scan function to fix issue with Nessus scan uploads.

* Adding additional optional properties for the creation of a test

* TODO -> Done

* Adding new vars to the unittest and restoring the lost work done on the the create_test function

* Remvong duplicate line

* Adding function to add metadata to a product, removing create_product function and adding the ability to add custom headers to the requests

* Since metadata can be applied to multiple objects, renaming the function to be more specific as to what object metadate is being applied

* Capturing enhancements to the DefectDojo API (v2) Python wrapper

* Adding title, description and version to the wrapper used to modify a test

* using the proper verb

* Fixing merge conflicts take #2

* Re-implementing change that had been left in the shuffle when resolving conflicts on the last PR merge