Gdxdsd 7170 python 3.8 audit (#484)

* Updated the virtual environment to python 3.8

* Changed prompts to use input() or getpass()

* Installed pandas

* Installed SQLAlchemy

* Changed to using dataframes to process the data

* Results printed to console are now in csv format

* Added optional flag to write results to console or file

* Updated readme and help info

* Removed extra quote escaping

* Converted NaN to blank values

* Specified SQLAlchemy version to 1.4.*

* Create embed id column if missing for all users

* Fixed Looker API3 key typo

operations/auditing/Pipfile

@@ -9,6 +9,8 @@ verify_ssl = true
 psycopg2-binary = "*"
 httplib2 = "*"
 argparse = "*"
+pandas = "*"
+sqlalchemy = "1.4.*"
 
 [requires]
-python_version = "2.7"
+python_version = "3.8"