BUG-642: get rid of sneakyThrow

This patch rids us of unneeded usage of Exceptions.sneakyThrow. It
generally hides problems and is only useful for generated (or sloppy)
code.

Change-Id: Ibb73f4546b1785c4bcb3e6c033249f58efd1d2d6
Signed-off-by: Robert Varga <rovarga@cisco.com>