Support wasb scheme alias in native Azure filesystem

[mrcnc]

Currently the native filesystem implementation for Azure storage only supports the abfs scheme, however some existing paths may use wasb. For many storage accounts it is possible to access the data via the Azure Data Lake Storage Gen2 APIs by parsing the wasb URI as if it were provided by abfs. For example

wasb://[email protected]/path/to/myfile.txt

is an alias for

abfs://[email protected]/path/to/myfile.txt

which can be accessed via the current implementation.

Enhancing the native filesystem implementation to support the wasb scheme will help support users who cannot easily change the paths.