Core, Parquet: Fix Parquet to work OutputFiles generated by StandardEncryptionManager.ecrypt().encryptingOutputFile()

[pvary]

The EncryptedOutputFile objects generated by the StandardEncryptionManager.encrypt method hide the underlying OutputFile.

Unfortunately, there are some hidden requirements in the Parquet implementation for encryption to work properly.
Parquet encryption was only functioning when the target was a HadoopOutputFile. Using StandardEncryptedOutputFile.encryptingOutputFile() produced an AesGcmOutputFile, which resulted in corrupt files.

Updated StandardEncryptedOutputFile to return itself as the encryptingOutputFile, instead of exposing the underlying AesGcmOutputFile. The methods coming from the OutputFile are now wrapped and return the values directly from the wrapped output file.

Added a test to highlight the issue.

The test currently fails without the patch, but successful if we change:

        Parquet.write(encryptedOutputFile.encryptingOutputFile())

to

        Parquet.write(encryptedOutputFile)

After the patch both OutputFile objects could be used.