qtmod_test: change the dir from build-dir to src-dir in qtqa autotest
qtmod_test: change the dir from build-dir to src-dir in qtqa autotest

When testing just one module in shadow-build, qtqa autotest was
executing 'git ls-files' on qt_gitmodule_build_dir, instead it needs
to be executed on top of qt_gitmodule_dir (which is the src-dir)

Change-Id: I92193485e8d0e256b661285da0201ae81e4e872e
Sanity-Review: Qt Sanity Bot <5581206bb7e0307f0d99eb71898ae6b694149ca5@ovi.com>
Reviewed-by: Rohan McGovern <d75463945f40a9669160a73cef2843e56b22c602@nokia.com>

tsarajar/qtqa,tsarajar/qtqa,tsarajar/qtqa,tsarajar/qtqa