refactor code: update the way gatorgrade writes a run to a file and save the information

[rebekahrudd]

This issue will address the code written in the configure_report function inside the output.py file. The goal is to more clearly define the inputs of the --report function and fail the gatorgrade program if the inputs are not the expected inputs. This will make the code more easily understandable and more manageable to work with for the longevity of this code and program.