The court may refuse to render or enter a declaratory judgment or decree where such judgment or decree, if rendered or entered, would not terminate the uncertainty or controversy giving rise to the proceeding; provided, however, that a controversy between insurance companies, arising either by direct action or by joinder or intervention, with respect to which of two or more of the insurers is liable under its particular policy and the insurers’ respective liabilities and obligations, constitutes a justiciable issue and the court should, upon petition by one or more of the parties to the action, render a declaratory judgment as to the liabilities and obligations of the insurers. (1931, c. 102, s. 5; 1989, c. 183.)