# Functions
Map2RawExtension convert map[string]interface{} to k8s.io/apimachinery/pkg/runtime.RawExtension.
RawExtension2Map convert k8s.io/apimachinery/pkg/runtime.RawExtension to map[string]interface{}.
SubDomainCheck checks whether domain satisfies the requirements of DNS subdomain.
# Constants
SubDomainRegex is regex for DNS subdomain.