another attempt to fix race condition in Qt tests

after tests were fixed found funny bug that was there forever test was
creating incorrect header file because our comment extractor takes
comment from first occurence of function name, it is not actual java
parser. Because indexer was not running test was passing.

Change-Id: Ib0cea722e6c9766949d07b629ef7a9197529ef45
Signed-off-by: Alena Laskavaia <elaskavaia.cdt@gmail.com>
Reviewed-on: https://git.eclipse.org/r/37410
Tested-by: Hudson CI
Optimzed Qt codan checker not to lock the ask if not running

Change-Id: Iff6749ea46f9c6970b4e96e47d8554846feb0dfe
Signed-off-by: Alena Laskavaia <elaskavaia.cdt@gmail.com>
Reviewed-on: https://git.eclipse.org/r/37304