title: karate.read json file in karate-config returns not an object
body: <p>In Karate 0.6.2, the following worked:</p>
  
  <p>var myJson = JSON.parse(karate.read('classpath:myJson.json').jsonString());</p>
  
  <p>However when upgrading to Karate 0.8.0, the above no longer seems to work, I believe jsonString() is no longer a function on the object returned by read. </p>
  
  <p>I tried to assign the result of read directly to the myJson var but when I try to read values from the json, I get a not an object exception. </p>
  
  <p>Doing a JSON.parse also doesn't work, since the result of read seems to be malformed json.</p>
  
  <p>So, the question i have is, how do i read a json file on the classpath in Karate 0.8.0 from karate-config and assign it to a variable that I can actually interact with?</p>