[skip ci] Add test

test/sumfact/poisson/poisson_3d.mini

@@ -16,6 +16,7 @@ extension = vtu
 
 [formcompiler]
 compare_l2errorsquared = 1e-4, 1e-8 | expand deg
+autotune_google_benchmark = 0, 1 | expand deg
 
 [formcompiler.r]
 numerical_jacobian = 1, 0 | expand num