Dynafed-storagestats

ADDED: get_file method to AzureStorageShare to generate file list for reports.
ADDED: storagestats.periodicity option validator.
CHANGE: Moved time helper functions to time.py file.

CHANGED: Where the logger is generated by moving it to the top of the modules
instead of inside every function that needs it.
CHANGED: Moved the setup_logger and associated classes to their own 'logger.py'
file. This allowed to remove a bunch of logger creations buy just placing
the main one at the top.
CHANGED: Reverts v1.0.39 to using back 'in' instead of '==' and forces ARGS.endpoint to be
a list through typecasting.

CHANGED: How endpoint are identified by "id" in config files. There was an
issue with using "in" instead of "==" to mask the requested endpoints.

ADDED: minio_prometheus_v2 option for compatibility with new minio api.

REMOVED: -j --json and to_json args and functions, as no longer needed.
CHANGED: prints for errors now go to standard error.

ADDED: Documentation on new names on minio-pormetheus docstring.