The signature of handleRequest update to allow for passing in database
name, query parameters, and path elements.

Construction of the request URL now happens inside of handleRequest,
rather than relying on caller to construct the URL.

Change-Id: I2ac8ea273ebc71e29947261601c136db00c9bfd7
Signed-off-by: Saad Karim <skarim@us.ibm.com>
Signed-off-by: Matthew Sykes <sykesmat@us.ibm.com>