Bug: Host addresses is empty

[kamilsa]

On commit 59f2db05 Feature: ws/wss connection support (#1483) we cannot start the node if chainspec only contains DNS libp2p addresses.
Example log:

23.02.18 18:32:37.151039  kagome           Info      AppConfiguration  Soramitsu Kagome started. Version: 0.8.0-71-spaced-storage-14-32275ed1
23.02.18 18:32:37.672261  kagome           Warning   Injector  Can not obtain a libp2p keypair from crypto storage. A unique one will be generated
23.02.18 18:32:37.681765  kagome           Info      BlockTree  Best block: #4148037 (0x55d9…a6ad), Last finalized: #4148035 (0xfb8c…0091)
23.02.18 18:32:37.686321  kagome           Warning   Soralog  Group 'parachain' for logger 'ParachainProcessorImpl' is not found. Fallback group will be used (it is group 'main' right now).
23.02.18 18:32:37.686331  kagome           Warning   Soralog  Group 'parachain' for logger 'CollationObserver' is not found. Fallback group will be used (it is group 'main' right now).
23.02.18 18:32:37.686778  kagome           Info      Application  Start as node version '0.8.0-71-spaced-storage-14-32275ed1' named as 'kagome-lover' with PID 67306
23.02.18 18:32:37.686948  kagome           Info      Application  Chain path is "sora-stage-node-1/sora-substrate-staging", storage backend is RocksDB
23.02.18 18:32:37.691746  kagome           Critical  RouterLibp2p  Host addresses is empty
23.02.18 18:32:37.692354  kagome           Debug     RpcThreadPool  Thread pool stopped
23.02.18 18:32:37.692477  kagome           Debug     ApiService  API Service stopped