update ember-cli-addon-tests

Author: Kelly Selden

package.json

@@ -47,7 +47,7 @@
     "cpr": "^1.1.1",
     "ember-ajax": "^2.4.1",
     "ember-cli": "2.10.0",
-    "ember-cli-addon-tests": "^0.3.0",
+    "ember-cli-addon-tests": "^0.4.0",
     "ember-cli-app-version": "^2.0.0",
     "ember-cli-content-security-policy": "0.4.0",
     "ember-cli-dependency-checker": "^1.3.0",