Fixed Hapi arrays to work as expected with swaggered-ui following swagger documentation

[Algiras]

Following swagger-api/swagger-ui#982 and hapijs/joi#570 we can't pass comma separated values and use array as expected. So here is a solution that follows swagger documented approach to passing collections. In hapi terms we just add collectionFormat -> multi meta tag.

Joi.array().items(Joi.object()).meta({collectionFormat: 'multi'})

[Algiras]

Just noticed, still have issue if there is only 1 parameter. :( Better then before, but there is no key[]=value type. https://github.com/swagger-api/swagger-spec/blob/master/versions/2.0.md.
Current way to workaround is pass if there is only one param, to pass it twice. It's better then before, but still does not solve the main problem. There is no way to do this if swagger-spec doesn't change.

[z0mt3c]

Thanks! We should keep an eye on that one!

[Algiras]

I created an issue about this: OAI/OpenAPI-Specification#442