multus centos pod with gateway change

centos-gateway.yml

---
apiVersion: "k8s.cni.cncf.io/v1"
kind: NetworkAttachmentDefinition
metadata:
  name: centos-gateway-def
spec: 
  config: '{
            "cniVersion": "0.3.1",
            "plugins": [
                {
                    "type": "macvlan",
                    "capabilities": { "ips": true },
                    "master": "eth1",
                    "mode": "bridge",
                    "ipam": {
                        "type": "static",
                        "routes": [
                            {
                              "dst": "0.0.0.0/0",
                              "gw": "10.1.1.1"
                            }
                        ]
                    }
                } ]
        }'
---
apiVersion: v1
kind: Pod
metadata:
  name: centos-gateway
  annotations:
    k8s.v1.cni.cncf.io/networks: '[
            { "name": "centos-gateway-def",
              "ips": [ "10.1.1.103/24" ],
              "gateway": [ "10.1.1.1" ]
            }
    ]'
spec:
  containers:
  - name: centos-gateway
    image: docker.io/centos/tools:latest
    command:
    - /sbin/init