Add constraints support for NLopt #1954

Job	Run time
test (Core, 1)	18m 31s
test (OptimizationBBO, 1)	10m 54s
test (OptimizationCMAEvolutionStrategy, 1)	10m 38s
test (OptimizationEvolutionary, 1)	10m 49s
test (OptimizationGCMAES, 1)	10m 31s
test (OptimizationManopt, 1)	18m 53s
test (OptimizationMetaheuristics, 1)	11m 45s
test (OptimizationMOI, 1)	12m 15s
test (OptimizationMultistartOptimization, 1)	10m 21s
test (OptimizationNLopt, 1)	10m 51s
test (OptimizationNOMAD, 1)	10m 44s
test (OptimizationOptimJL, 1)	12m 18s
test (OptimizationOptimisers, 1)	10m 39s
test (OptimizationPRIMA, 1)	11m 42s
test (OptimizationQuadDIRECT, 1)	12m 52s
test (OptimizationSpeedMapping, 1)	11m 5s
test (OptimizationPolyalgorithms, 1)	10m 28s
test (OptimizationNLPModels, 1)	11m 39s
	3h 36m 55s

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