CI: Add missing host key

Author: alexp-sssup

Diff for: .circleci/config.yml

@@ -14,6 +14,7 @@ jobs:
           command: |
             mkdir -p ~/.ssh
             echo $GH_HOST >> ~/.ssh/known_hosts
+            echo $RPM_HOST >> ~/.ssh/known_hosts
       - run:
           name: Install rsync
           command: |