I found a solution while this post was being approved. It is very easy to set up.
You must create a player camera manager blueprint class.
With this open, and the root selected, you can scroll down in the details window to player camera manager and limit the pitch, yaw, and roll.
Then open your player controller blueprint, and reference your new player camera manager class in the details window.
finally, make sure your player controller is referenced in the game mode blueprint.