GUACAMOLE-38: Add unit test for query string parser.

extensions/guacamole-auth-quickconnect/pom.xml

@@ -193,6 +193,14 @@
             <scope>provided</scope>
         </dependency>
 
+        <!-- JUnit -->
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.10</version>
+            <scope>test</scope>
+        </dependency>
+
     </dependencies>
 
 </project>