Description of problem:
There's an error in the firebug web console if user goes to Clusters page if there is some cluster created.

Error: Response for getList SHOULD be an array and not an object or something else C/m@http://<hostname>:8080/scripts/app.js:45:22259 s@http://<hostname>:8080/scripts/app.js:17:3744 u/<@http://<hostname>:8080/scripts/app.js:17:3916 $n/this.$get</h.prototype.$eval@http://<hostname>:8080/scripts/app.js:17:11429 $n/this.$get</h.prototype.$digest@http://<hostname>:8080/scripts/app.js:17:9933 $n/this.$get</h.prototype.$apply@http://<hostname>:8080/scripts/app.js:17:11714 o@http://<hostname>:8080/scripts/app.js:16:18562 m@http://<hostname>:8080/scripts/app.js:16:20412 Fe/</w.onload@http://<hostname>:8080/scripts/app.js:16:20955

Version-Release number of selected component (if applicable):
rhscon-core-0.0.21-1.el7scon.x86_64
rhscon-ceph-0.0.20-1.el7scon.x86_64
rhscon-ui-0.0.34-1.el7scon.noarch

How reproducible:
100%

Steps to Reproduce:
1. Create some cluster
2. Open firebug web console
3. Go to the Clusters page

Actual results:
There's an error

Expected results:
No error in the firebug web console

Additional info: