Adding label for RTA

mac-clang-10.10-x64_iOS-Android added.

Change-Id: I413d090c0243516007a984f858c43db523f0a66c
Reviewed-by: Johanna Äijälä <johanna.aijala@digia.com>
Reviewed-by: Jani Heikkinen <jani.heikkinen@theqtcompany.com>