operator: added overlays CR functionalty

src/kubernetes-api/internal/nedinterface/nedinterface.go

+package nedinterface
+
+func GetConnectionInfo() (string, string) {
+	return "", ""
+}

src/kubernetes-api/internal/sdnclient/internal_client.go

@@ -95,7 +95,7 @@ func (c *InternalClient) AttachPodToNetwork(networkType l2smv1.NetworkType, conf
 	if err != nil {
 		return err
 	}
-	response, err := c.Session.Post(fmt.Sprintf("%s/api/port", networkType), jsonData)
+	response, err := c.Session.Post(fmt.Sprintf("/%s/api/port", networkType), jsonData)
 	if err != nil {
 		return err
 	}

src/kubernetes-api/internal/utils/utils.go

@@ -3,6 +3,7 @@ package utils
 import (
 	"bytes"
 	"crypto/sha1"
+	"crypto/sha256"
 	"encoding/hex"
 	"fmt"
 	"strings"
@@ -82,3 +83,23 @@ func GetPortNumberFromNetAttachDef(netAttachName string) (string, error) {
 
 	return portNumber, nil
 }
+
+// generateDatapathID generates a datapath ID from the switch name
+func GenerateDatapathID(switchName string) string {
+	// Create a new SHA256 hash object
+	hash := sha256.New()
+
+	// Write the switch name to the hash object
+	hash.Write([]byte(switchName))
+
+	// Get the hashed bytes
+	hashedBytes := hash.Sum(nil)
+
+	// Take the first 8 bytes of the hash to create a 64-bit ID
+	dpidBytes := hashedBytes[:8]
+
+	// Convert the bytes to a hexadecimal string
+	dpid := hex.EncodeToString(dpidBytes)
+
+	return dpid
+}