PIDTransientControl object enhancement

[jthano]

Reason

PIDTransientControl checks if the executioner is Transient and outputs a mooseError if it isn't. However, at least one moose based app has executioners that are "quasi" transients but inherit from Eigenvalue instead of Transient since inheriting from both is not possible. The PIDTransientControl can be used with these executioners if the check is changed to if (!_fe_problem.isTransient()). Furthermore, PIDTransientControl would be more useful with two parameters that allow a user to limit the output value between a minimum and maximum value.

Design

Update the check in the constructor to if (!_fe_problem.isTransient()) and add two new parameters.

Impact

PIDTransientControl will be more useful in Griffin and potentially other moose based apps.