Updated git submodules

Updated git submodules

Project: infrautils master ffdb00f87a200c403c147bfd905e97252007c7be

Enable FindBugs for diagstatus

it found no real bugs, but two very minor clean ups; but should help to
ensure that no new bugs (detectable by FindBugs) get introduced later

and remove a dependency we had to yangtools - infrautils should not (and
FindBugs did not like that equals() implementation - EQ_UNUSUAL)

Change-Id: I4c9c27c8a72db232a7f0688e097baf63e800d384
Signed-off-by: Michael Vorburger <vorburger@redhat.com>