[qtc] simplify mer runcommand
[qtc] simplify mer runcommand

Signed-off-by: Juha Kallioinen <43c4d3ea39adf273f2c732766de5ac244e802225@jolla.com>

martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator