doc: FileSystemMetricsRepository sync on DBFS tutorial (#187)

* FileSystemMetricsRepository sync on DBFS tutorial

I need to migrate python-deequ application - I expected this task to take 1-2h initially but It took me a lot more than that. I hope that helps other people,

* Add files via upload

* Rename repository_sync_dbfs.ipynb to repository_file_dbfs.ipynb

* Update repository_file_dbfs.ipynb

* Update repository_file_dbfs.ipynb

* Update repository_file_dbfs.ipynb

* Update repository_file_dbfs.ipynb