Add bld.qt user as default user for SSH / qt-gerrit.it.local

Change-Id: I620941c64142252c36e6e7d4f41e2f3efcef78a7
Reviewed-by: Heikki Halmet <heikki.halmet@digia.com>
Reviewed-by: Samuli Piippo <samuli.piippo@digia.com>