title: Wiremock multiple matching for single query parameter
body: <p>I am using Wiremock standalone 2.21, and i want to have multiple matches for a single query parameter. 
  What I'm sending with postman: </p>
  
  <pre><code>http://localhost:8787/template?param1=test1
  </code></pre>
  
  <p>In my mapping file i have this:</p>
  
  <pre><code>...
  
      "request": {
          "method": "POST",
          "urlPattern":"/template.*",
          "queryParameters" : {
              "param1" : {
                  "equalTo" : "test1"
              }
          }
      },
  
  ...
  </code></pre>
  
  <p>I want it to also match with other strings. ex: test2, test3, etc. Is that possible with Wiremock?</p>