DpkgRootfs: Fix logcheck_error false-positive when use multilib

DpkgRootfs: Fix logcheck_error false-positive when use multilib

Rootfs with dpkg was failing due to false-positive in logcheck_error
because current logic of DpkgPM handles missing dependencies failure
using apt-get -f install [1][2].

This support was broken due to addition of logcheck and don't take into
account dpkgpm cases, in order to fix add an attr for specify expected
errors regex'es by package manager.

[1] http://git.yoctoproject.org/cgit/cgit.cgi/poky/tree/meta/lib/oe/rootfs.py#n659
[2] http://git.yoctoproject.org/cgit/cgit.cgi/poky/tree/meta/lib/oe/package_manager.py#n2038

Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com>
Signed-off-by: Matt Madison <matt@madison.systems>
Signed-off-by: Ross Burton <ross.burton@intel.com>