[Jenkinsfile] Check of RH update availability - fix remote call
[Jenkinsfile] Check of RH update availability - fix remote call

subutai-io/Subutai,subutai-io/Subutai,subutai-io/base,subutai-io/base,subutai-io/base,subutai-io/base,subutai-io/Subutai,subutai-io/Subutai,subutai-io/Subutai,subutai-io/Subutai