A bit more reasonable regression benchmark config [ci skip]

waf_tools/regression_benchmarks.json

 [
 { "name" : "regression_benchmark",
-  "functions" : ["Rastrigin", "Ackley", "GramacyLee", "Step", "Levy", "SixHumpCamel", "RobotArm", "OTLCircuit", "PistonSimulation", "PlanarInverseDynamicsI", "PlanarInverseDynamicsII"],
-  "dimensions" : [[1,2,4,8], [1,2,4,8], [1], [1], [1,2,4,8], [2], [8], [6], [7], [6], [6]],
-  "points" : [40, 80, 100, 200, 400, 600],
+  "functions" : ["Rastrigin", "Ackley", "GramacyLee", "Step", "SixHumpCamel", "RobotArm", "OTLCircuit", "PistonSimulation", "PlanarInverseDynamicsI", "PlanarInverseDynamicsII"],
+  "dimensions" : [[1,2,4,8], [1,2,4,8], [1], [1], [2], [8], [6], [7], [6], [6]],
+  "points" : [50, 100, 200, 400, 600],
   "randomness": ["uniform"],
   "noise" : "true",
   "models" : [{"name" : "GP-SE-Full", "type" : "GP", "kernel" : {"type": "SquaredExpARD", "optimize_noise" : "true", "params" : {"sigma_sq" : ["double", 1.0]}}, "mean" : {"type": "NullFunction", "has_defaults" : "false"}, "hp_opt" : {"type" : "KernelLFOpt", "optimizer" : "Rprop", "params" : {"eps_stop" : ["double", 1e-6]}}},
-        {"name" : "GP-SE", "type" : "GP", "kernel" : {"type": "SquaredExpARD", "optimize_noise" : "false", "params" : {"sigma_sq" : ["double", 1.0]}}, "mean" : {"type": "NullFunction", "has_defaults" : "false"}, "hp_opt" : {"type" : "KernelLFOpt", "optimizer" : "Rprop", "params" : {"eps_stop" : ["double", 1e-6]}}},
-        {"name" : "GP-LOO-CV", "type" : "GP", "kernel" : {"type": "SquaredExpARD", "optimize_noise" : "true", "params" : {"sigma_sq" : ["double", 1.0]}}, "mean" : {"type": "NullFunction", "has_defaults" : "false"}, "hp_opt" : {"type" : "KernelLooOpt", "optimizer" : "Rprop", "params" : {"eps_stop" : ["double", 1e-6]}}}]
+        {"name" : "GP-SE", "type" : "GP", "kernel" : {"type": "SquaredExpARD", "optimize_noise" : "false", "params" : {"sigma_sq" : ["double", 1.0]}}, "mean" : {"type": "NullFunction", "has_defaults" : "false"}, "hp_opt" : {"type" : "KernelLFOpt", "optimizer" : "Rprop", "params" : {"eps_stop" : ["double", 1e-6]}}}]
 }]