Parameter for outlier tolerance change when is pump on

In PhenometricsPumpManager, the lower outlier tolerance is changed when pump is turned on (L128) and changed back when pump is turned off (L148). Now the current value is multiplied by a constant (number `2` particularly). This should be generalised to the multiplication by a variable defined in the protocol as `pump_on_outlier_factor` (feel free to come up with a better name).