nfs: introduce exception per status code

The new exceptions names created from nfs status codes in camel-case form.
108 new exceptions is total. The original ChimeraNFSException turned into
abstract class to enforce correct subtype usage.

Acked-by: Gerd Behrmann
Target: master
test: suppress deprecation warning

with openjdk-1.8 maven fail to compile code with
deprecated API. As suggestion in javadoc does not work,
suppress deprecation.

Acked-by: Paul Millar
Acked-by: Gerd Behrmann
Target: master