chore(package): update ember-cli-page-object to version 1.17.1

Closes #1748

Author: greenkeeper[bot]

package.json

@@ -50,7 +50,7 @@
     "ember-cli-mirage": "^0.3.4",
     "ember-cli-moment-shim": "^3.4.0",
     "ember-cli-neat": "^0.0.6",
-    "ember-cli-page-object": "1.14.1",
+    "ember-cli-page-object": "1.17.1",
     "ember-cli-password-strength": "^2.0.0",
     "ember-cli-qunit": "^4.1.1",
     "ember-cli-release": "^0.2.9",