* Check ${target_rootfs}/etc/passwd rather than
${target_rootfs}${rpmlibdir} to make sure that it has been previously
installed.
* Remove the "--nodeps" when incremental image generation, it should
take care of the dependencies. Still use "--replacefiles --replacepkgs" in
case there are conflicts.
[YOCTO #3047]
Signed-off-by: Robert Yang <liezhi.yang@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com>