Allow matching feature to match exact query params

[flaviomeira]

When a session with 2 objects is activated, and this 2 objects have different params, Tshield always returns the first object.

I'd like to get the object which has more matches. In the following example Tshield always returns the first object of the matching session, while the second object has more params to match.

Scenario: Return correct answer for same path with different params
    Given a file to describe "/path/1" path
    And in session "multiples-responses-with-different-params"
    When this api is accessed throught tshield with params
    And this api is accessed throught tshield with params
      | key | value |
      | param1 | param1_value |
      | param2 | param2_value |
      | param3 | param3_value |
    Then response should be equal "request called with 3 params"

The 'multiples-responses-with-different-params' session has 2 objects:

[
  {
    "session": "multiples-responses-with-different-params",
    "stubs": [
      {
        "method": "GET",
        "path": "/path/1",
        "query": {
          "param1": "param1_value",
          "param2": "param2_value"
        },

        "response": {
          "status": 200,
          "headers": {
            "content-type": "application/json;charset=UTF-8"
          },
          "body": "request called with 2 params"
        }
      },


      {
        "method": "GET",
        "path": "/path/1",
        "query": {
          "param1": "param1_value",
          "param2": "param2_value",
          "param3": "param3_value"
        },

        "response": {
          "status": 200,
          "headers": {
            "content-type": "application/json;charset=UTF-8"
          },
          "body": "request called with 3 params"
        }
      }
    ]}
]