To
shoe horn a solution into a problem for some convenient reason; to settle for less for convenience.
Derived from the stage name for Greg Brady in the Brady Bunch original episodes; Greg left the "Brady Six" and went solo. The
Johnny Bravo stage presense was characterized by a
matador suit. Greg Brady was chosen not for his voice or talent, but because he "fit the suit."
When something is Johnny Bravo, it fits your needs, even though it may not be the most qualified solution.