Add a api-docs page with Swagger-UI in REST Service Through VDB

With document [1], we can use REST API to access the data in VDB, for example, there are 4 procedures defined in PortfolioRest VDB as [2] under 'Rest' Model:

• foo
• getAllStocks
• getAllStockById
• getAllStockBySymbol

Correspondingly, there are 4 api:

• http://localhost:8080/portfoliorest_1/rest/foo
• http://localhost:8080/portfoliorest_1/rest/getAllStocks
• http://localhost:8080/portfoliorest_1/rest/getAllStockById/ {id}
• http://localhost:8080/portfoliorest_1/rest/getAllStockBySymbol/ {symbol}

With Swagger UI, it's easy to add a api-doc page for all api, [3] is a example.

[1] https://docs.jboss.org/author/display/TEIID/REST+Service+Through+VDB
[2] https://raw.githubusercontent.com/kylinsoong/teiid-quickstarts/master/dynamicvdb-restservice/src/vdb/portfolio-rest-vdb.xml
[3] http://petstore.swagger.io/