lava-boot-v2: lab-baylibre: set priority to medium
lava-boot-v2: lab-baylibre: set priority to medium

Signed-off-by: Kevin Hilman <f9849b02abe18c1ece6bd40346458ed53f49d31b@baylibre.com>

kernelci/lava-ci-staging,kernelci/lava-ci-staging,kernelci/lava-ci-staging