Update to new release of moby/ipvs

hack/pin-dependency.sh github.com/moby/ipvs v1.1.0

- go to a fixed tag for `vishvananda/netns`
- no more references to `pkg/errors`

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

hack/unwanted-dependencies.json

@@ -100,7 +100,6 @@
         "github.com/go-logr/zapr",
         "github.com/google/cadvisor",
         "github.com/grpc-ecosystem/go-grpc-middleware",
-        "github.com/moby/ipvs",
         "go.etcd.io/etcd/raft/v3",
         "go.uber.org/zap",
         "gotest.tools/v3",
@@ -111,4 +110,4 @@
       ]
     }
   }
-}
+}