Support multi kubernetes version

[yuanying]

To check k8s version on deploying time and set valid configuration.

For example, k8s 1.6 and 1.7 supports different admission controls.
So we should set admission controls correctly for each versions.

defaultv16AdmissionControl = "NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,DefaultTolerationSeconds,ResourceQuota"
defaultv17AdmissionControl = "Initializers,NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota"