Update lua configuration_data when number of controller pod change

internal/ingress/types.go

@@ -71,6 +71,9 @@ type Configuration struct {
 
 	// ConfigurationChecksum contains the particular checksum of a Configuration object
 	ConfigurationChecksum string `json:"configurationChecksum,omitempty"`
+
+	// ControllerPodsCount contains the list of running ingress controller Pod(s)
+	ControllerPodsCount int `json:"controllerPodsCount,omitempty"`
 }
 
 // Backend describes one or more remote server/s (endpoints) associated with a service
@@ -338,3 +341,8 @@ type Ingress struct {
 	extensions.Ingress
 	ParsedAnnotations *annotations.Ingress
 }
+
+// GeneralConfig holds the definition of lua general configuration data
+type GeneralConfig struct {
+	ControllerPodsCount int `json:"controllerPodsCount"`
+}