Nothing in sections 329.10 to 329.17 contained shall be construed as prohibiting, or in any way limiting or interfering with, the right of any city, or other municipal corporation or governmental subdivision of the state, to regulate or license the carrying on within such municipality the business of a transient merchant in any case where authority has been, or shall hereafter be, conferred upon it so to do, but the requirements of sections 329.10 to 329.17 shall be in addition thereto. A city, or with respect to the area outside the corporate limits of a city, a county, may enact a transient merchant licensing requirement excluding certain classes of transient merchant events, or determine by resolution of its governing body that certain classes of transient merchant events need not comply with section 329.11.