[PDI-11564] As a PDI and Hadoop user, I want PDI to support Kerberos Authentication (Full Shim Non MapR)

Kerberos HDP21 CE part
Seems to work the same as before.
Merge pull request #135 from stepanovdg/PDI-11564

[PDI-11564] As a PDI and Hadoop user, I want PDI to support Kerberos Authentication (Full Shim Non MapR)