Revert Clausius-Clapeyron Coefficient change on enthalpy test

 - see sandialabs/Albany#966

Author: jewatkins

perf_tests/green-3-20km/input_albany_Enthalpy_MueLuKokkos.yaml

@@ -21,7 +21,7 @@ ANONYMOUS:
       Ice Density: 9.10e+02
       Gravity Acceleration: 9.81e+00
       Reference Temperature: 2.65e+02
-      Clausius-Clapeyron Coefficient: 0.0 #7.9e-08
+      Clausius-Clapeyron Coefficient: 7.9e-08
       Ice Latent Heat Of Fusion: 3.34e+05
       Permeability factor: 1.0e-12 #1e-12
       Viscosity of water: 1.79999999999999995e-03