wic: Fix a path to a psuedo state directory (PSEUDO_LOCALSTATEDIR).
In case of 'new_rootfs' the psuedo directory is not copied. Thus
PSEUDO_LOCALSTATEDIR should still point to the dsa
'native_sysroot'/../pseudo. Otherwise PSEUDO_LOCALSTATEDIR points to a not
existing director ('new_rootfs'/../pseudo) and UID and GUID attributes are not
applied to files of the image.
Signed-off-by: Adrian Fiergolski <adrian.fiergolski@cern.ch> Signed-off-by: Ross Burton <ross.burton@intel.com>