test_definitions.sh: Use QA_TOOLS_REPO/QA_TOOLS_BRANCH job params

As newer versions of params, define for tf-a-builder job, and more recently
tf-a-ci-gateway too.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I915d185e60d069ad7389cb0dc12ab00aeeb98cda
1 file changed