[BUG][JAVA][Spring] When specifying a responseWrapper, jdk8 is false and doesn't import Optional in Controller

[LionH]

in this code line, the jdk8 parameter is set to false when a responseWrapper is specified and even with the option useOptional=true, the APIController doesn't take in account the option flag.
I suggest to use the useOptional option also in the apiController or not to set to false the jdk8 in case we use a responseWrapper.

My actual configuration:

configOptions = [
        delegatePattern : "true",
        dateLibrary : "java8",
        interfaceOnly : "false",
        java8: "true",
        performBeanValidation : "true",
        responseWrapper: "CompletableFuture",
        serializationLibrary : "jackson",
        swaggerDocketConfig : "true",
        useOptional : "true"
    ]