declaration of condominium per se, but is instead created by the board of directors of the condominium association, the rule of reasonableness comes into vogue. The requirement of \"reasonableness\" in these instances is designed to somewhat fetter the discretion of the board of directors. By imposing such a standard, the board is required to enact rules and make decisions that are reasonably related to the promotion of the health, happiness and peace of mind of the unit