Invalid http tests with ?gremlin=1-1

Various tests with ?gremlin=1-1 are compared against

      node.get("result").get("data").intValue() or

      node.get("result").get("data").get(GraphSONTokens.VALUEPROP).get(0).intValue()

which accidentally result in the 0 value.

Replace with ?gremlin=2-1 and 

      node.get("result").get("data").get(GraphSONTokens.VALUEPROP).get(0).get(GraphSONTokens.VALUEPROP).intValue()