Gitlab: Fix TEST_PY_TEST_SPEC for qemu-x86_64 in sjg-lab

Gitlab: Fix TEST_PY_TEST_SPEC for qemu-x86_64 in sjg-lab

With the change to regularize the usage of TEST_PY_TEST_SPEC in the
sjg-lab stanza with commit c7f360f20d84 ("Gitlab: Rework sjg-lab calling
test.py to be closer to test.py stage") the leading "and " part of the
usage under qemu-x86_64 wasn't removed when it should have been. Do so
now.

Fixes: c7f360f20d84 ("Gitlab: Rework sjg-lab calling test.py to be closer to test.py stage")
Reviewed-by: Simon Glass <simon.glass@canonical.com>
Signed-off-by: Tom Rini <trini@konsulko.com>