Update the jenkins-subpath

Change was made to how the build was extracted from the build-setup.sh.
The change from there impacts the QEMU-Launch portion as it borrows
the output build from the build-setup.sh. Variable default updated
to reflect the change of it now being under ./openbmc/build.

Change-Id: I37644c2078c1f5a58baf6f9b4924a705f7bd33fe
Signed-off-by: Alanny Lopez <Alanny.Lopez@ibm.com>
1 file changed