Changes

• [core] add override for systemd-nspawn (Debian Bug #1101553)
  (Debian Bug#1101553 by Raphaël Halimi raphael.halimi@gmail.com)
• [core] add another pattern to ignore java native access
  (github issue #267 by @rdemongeot)

Fixes

• [core] unbreak systemd-user w/ dash
  (Debian Bug#1101551 by Raphaël Halimi raphael.halimi@gmail.com)
  (github pull request #338 by Ivan Shapovalov @intelfx)
• [metrics] fix undefined values warning if no expected ucode version is available