code: move ingress configmap to gitea

basic/config/kube-system/metallb-gitea.yaml

----
-# https://metallb.org/usage/
-#apiVersion: metallb.io/v1beta1
-apiVersion: v1
-kind: Service
-metadata:
-  name: gitea-ssh
-spec:
-  type: LoadBalancer
-  loadBalancerIP: "${ip_address}"
-  ports:
-    - name: ssh
-      protocol: TCP
-      port: 22
-      targetPort: 22
-  selector:
-    app: gitea
-status:
-  loadBalancer:
-    ingress:
-    - ip: "${ip_address}"