run_local_ci.sh: fix scp and spm grep matches

String matches, scp and spm, must be at the beginning of the test
group otherwise test groups like tf-l3-boot-tests-spm-mm would match
and config reshuffle would happend, leading to unmatched test
descriptions.

Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>
Change-Id: Ia4dad74de1477cb55e43c7578526d1f10fa8bfbf