Make sure --cluster-dns uses DNSServiceIp set in KubernetesConfig and not always default value (#2078)
Make sure --cluster-dns uses DNSServiceIp set in KubernetesConfig and not always default value (#2078)


rjtsdl/acs-engine,jackfrancis/acs-engine,rjtsdl/acs-engine,yangl900/acs-engine,jackfrancis/acs-engine,yangl900/acs-engine,jackfrancis/acs-engine,Azure/acs-engine,Azure/acs-engine,yangl900/acs-engine,Azure/acs-engine,Azure/acs-engine,yangl900/acs-engine,rjtsdl/acs-engine,jackfrancis/acs-engine,rjtsdl/acs-engine,jackfrancis/acs-engine,yangl900/acs-engine,rjtsdl/acs-engine,Azure/acs-engine