Add geometry mixins to stokes sumfact ini files

test/sumfact/stokes/stokes.mini

@@ -18,3 +18,4 @@ compare_l2errorsquared = 1e-12
 numerical_jacobian = 1, 0 | expand num
 vectorization_quadloop = 1, 0 | expand quad
 sumfact = 1
+geometry_mixins = sumfact_equidistant

test/sumfact/stokes/stokes_dg.mini

@@ -19,5 +19,6 @@ compare_l2errorsquared = 1e-8
 numerical_jacobian = 0, 1 | expand num
 sumfact = 1
 fastdg = 1, 0 | expand fastdg
+geometry_mixins = sumfact_equidistant
 
 {formcompiler.r.fastdg} == 1 and {formcompiler.r.numerical_jacobian} == 1 | exclude
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