pkg/payload/testdata/TestRenderManifest_expected_cvo_deployment: Update fixture

Catch up with the previous few commits, that added this environment
variable to the install/ directory.

Author: wking

pkg/payload/testdata/TestRenderManifest_expected_cvo_deployment.yaml

@@ -76,6 +76,8 @@ spec:
               fieldPath: spec.nodeName
         - name: CLUSTER_PROFILE
           value: 'some-profile'
+        - name: KUBE_FEATURE_WatchListClient
+          value: "false"
       # this pod is hostNetwork and uses the internal LB DNS name when possible, which the kubelet also uses.
       # this dnsPolicy allows us to use the same dnsConfig as the kubelet, without access to read it ourselves.
       dnsPolicy: Default