When building a patch that includes the software package, the
deploy-precheck script will be automatically fetched from .deb file and
included directly inside the patch. With this there is no need to have
element 'deploy_precheck' in XML recipe schema.
Test Plan:
PASS: Create patch successfully with software package included and
install it in a AIO-SX system.
PASS: Create patch without software package included and install it
in a AIO-SX system.
Story: 2010676
Task: 49978
Change-Id: I9d470ed049d42880bb515320324de1e3a0e05680
Signed-off-by: Dostoievski Batista <dostoievski.albinobatista@windriver.com>