ETCD backend - empty output

I am using chartmuseum v0.11.0 (v0.10.0 got same issue) and etcd v2.0.9
When I am running :
```
chartmuseum --debug --port=8080 \
--storage="etcd" \
--storage-etcd-cafile="./cert/server.crt" \
--storage-etcd-certfile="./cert/serverCrt.crt" \
--storage-etcd-keyfile="./cert/serverKey.key" \
--storage-etcd-prefix="/chartmuseum" \
--storage-etcd-endpoint="http://localhost:2379"

```
The output is always empty , may be I am doing something wrong - but I have no exception or even some kind of logs.