Initial commit for adding ecr credential plugin

types/rke_types.go

@@ -110,6 +110,8 @@ type PrivateRegistry struct {
 	Password string `yaml:"password" json:"password,omitempty" norman:"type=password"`
 	// Default registry
 	IsDefault bool `yaml:"is_default" json:"isDefault,omitempty"`
+	// CredentialPlugin
+	CredentialPlugin map[string]string `yaml:"credentialPlugin" json:"credentialPlugin,omitempty"`
 }
 
 type RKESystemImages struct {