Grub unit tests do not like more than 1 CPU being
specified when building the package. So set the jobs
to 1 in the meta_data.yaml. Build will be slower but
at least it will build.
Test Plan:
Pass: successfully build test
Pass: successfully install test
Pass: successfully boot test
Depends-On: https://review.opendev.org/c/starlingx/root/+/821048
Story: 2009221
Task: 43679
Change-Id: I8bda78819a14995618d4504471d24b0ffebb6ca2
Signed-off-by: Charles Short <charles.short@windriver.com>