pm-qa: change result message for tests

- change the result message for each subtest, so that it won't interfere with lava log
  parsing. Report total pass and fail count for tests.
- bug: https://bugs.launchpad.net/linaro-power-qa/+bug/1156614
- change permission in cputopology scripts for execution

Signed-off-by: Sanjay Singh Rawat <sanjay.rawat@linaro.org>
41 files changed