You'll have to add the new password as an object under the Locker service. When the error occurs you should be prompted on the right pane what password to use from a drop down. Select the new password that you created and it should clear though. It will prompt you for each node in the vRLI cluster but once it's done it should stick with the new password object. If the previous password was only setup for vRLI you can go back into the Locker service and remove the old password.