fix(jasmine2): be consistent about passing assertions in output JSON

See #2051

Author: juliemr

lib/frameworks/jasmine2.js

@@ -34,6 +34,12 @@ RunnerReporter.prototype.specDone = function(result) {
     duration: new Date().getTime() - this.startTime.getTime()
   };
 
+  if (result.failedExpectations.length == 0) {
+    entry.assertions.push({
+      passed: true
+    });
+  }
+
   result.failedExpectations.forEach(function(item) {
     entry.assertions.push({
       passed: item.passed,