localCI: don't re-test if pull request has not changed
localCI: don't re-test if pull request has not changed

with this patch if localCI is not able to get the information
of a specific pull request it uses the old one to avoid deleting
it from already tested revisions causing a re-test of a pull
request that has not changed

fixes #468

Signed-off-by: Julio Montes <4a43a13347431ef00be7d745d08a5ba1757e840b@intel.com>

devimc/tests,devimc/tests,MarioCarrilloA/tests,clearcontainers/tests,chavafg/tests,chavafg/tests,MarioCarrilloA/tests,clearcontainers/tests