gen_merge_report.sh: Make ARTIFACT_PATH/INFO_PATH/JSON_PATH conditional

Depending on whether it's ArmCI or OpenCI, as the two systems use different
code coverage artifact paths.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I324a03a9fb0d12a5cf34696501308756ee7b97f8
1 file changed