Issue with domain names in FindModelDefinition

[bettse]

I don't have a full example, but I ran into a situation where I was getting an error

2017/05/26 18:14:11 Can not find definition of x model. Name looks like absolute, but model not found in github/com/.../models package

And I noticed the 'github/com' where it should be 'github.com', and I think this might be a result of the split on periods here:

swagger/parser/parser.go

Line 396 in b4c403f

modelNameParts := strings.Split(modelName, ".")

and then its later rejoined with slashes here:

swagger/parser/parser.go

Line 406 in b4c403f

absolutePackageName := strings.Join(modelNameParts[:len(modelNameParts)-1], "/")

Let me know if you need and example to demonstrate and reproduce