depexp: use stateForceShutdown instead of stateStop

This state was renamed in bitbake 12e9d3 but this use of it wasn't changed.

[ YOCTO #5445 ]

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
bb.codeparser.py: Remove reference for oe.utils.contains

The oe.utils.contains function has been removed from OE-Core metadata
as the references for it has been replaced to use the
bb.utils.contains.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>