restconfig's CoverageStoreFileResource.handlePut doesn't properly set style and wmspath specified in the request

Style and wmspath parameters are ignored by the CoverageStoreFileResource handleput method when setting layerInfo in the catalog.
The handlePut method leverages on the CatalogBuilder convenience class.

I suggest to extend the CatalogBuilder's buildLayer method to take an additional Map as input containing parameters needed to configure the layerInfo object with style and wmspath (when available).

I have attached a patch to handle that case.
If everything it's ok, I will committ the changes.