Adding spark.hadoop.fs.azure properties needed for NativeAzureFileSy…

[andrijaperovic]

…stem to work correctly in spark context
Please see:
#41

[andrijaperovic]

Can you please take a look @jainr @snowmanmsft
++ @rramani

[jainr]

Thanks for the contribution, can you also add an else block which tells user that they need to set those params if not found?

[andrijaperovic]

Thanks for the contribution, can you also add an else block which tells user that they need to set those params if not found?

@jainr i believe these are already standard feast Azure environment variables. They are referenced in the historical features python notebook.

[jainr]

Looks good, approving it.