oeqa/decorators: Added decorator to restart the DUT in case of test hang.
Once the DUT is hanged during testing, currently all the following test
cases have to wait for default timeout to exit. Using this decorator the
user can choose a timeout at case by case basis and what happens when the
timeout is reached by overwriting the self.target.restart method.
[YOCTO #7853]
Signed-off-by: Lucian Musat <george.l.musat@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
