Set the target to use (one of buildozer.targets, such as "android")

def set_target(self, target):
        '''Set the target to use (one of buildozer.targets, such as "android")
        '''
        self.targetname = target
        m = __import__('buildozer.targets.{0}'.format(target),
                       fromlist=['buildozer'])
        self.target = m.get_target(self)
        self.check_build_layout()
        self.check_configuration_tokens()