Add generic arguments to Answer

Just use Object as the argument to get rid of the warnings.

Change-Id: I17d2ee9c518ed53c27bd5e1c330e7c161a388194
Signed-off-by: Robert Varga <rovarga@cisco.com>
Fix warnings in sal-akka-raft

Make sure to add generic arguments to instantiation and do not use
deprecated junit classes.

Change-Id: I0a84c3c20125a00bb262bf4dfce30c77fcaa765d
Signed-off-by: Robert Varga <rovarga@cisco.com>