Vendor github.com/containernetworking/cni libcni and pkg file needed for CHECK

Update plugins/tests to deal with changes made to this vendor'ed code

plugins/meta/bandwidth/bandwidth_linux_test.go

@@ -15,6 +15,7 @@
 package main
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
 	"net"
@@ -625,7 +626,7 @@ var _ = Describe("bandwidth test", func() {
 				defer GinkgoRecover()
 
 				containerWithTbfRes, _, err = testutils.CmdAdd(containerWithTbfNS.Path(), "dummy", containerWithTbfIFName, []byte(ptpConf), func() error {
-					r, err := invoke.DelegateAdd("ptp", []byte(ptpConf), nil)
+					r, err := invoke.DelegateAdd(context.TODO(), "ptp", []byte(ptpConf), nil)
 					Expect(r.Print()).To(Succeed())
 
 					return err
@@ -633,7 +634,7 @@ var _ = Describe("bandwidth test", func() {
 				Expect(err).NotTo(HaveOccurred())
 
 				containerWithoutTbfRes, _, err = testutils.CmdAdd(containerWithoutTbfNS.Path(), "dummy2", containerWithoutTbfIFName, []byte(ptpConf), func() error {
-					r, err := invoke.DelegateAdd("ptp", []byte(ptpConf), nil)
+					r, err := invoke.DelegateAdd(context.TODO(), "ptp", []byte(ptpConf), nil)
 					Expect(r.Print()).To(Succeed())
 
 					return err

plugins/meta/flannel/flannel.go

@@ -20,6 +20,7 @@ package main
 
 import (
 	"bufio"
+	"context"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
@@ -160,7 +161,7 @@ func delegateAdd(cid, dataDir string, netconf map[string]interface{}) error {
 		return err
 	}
 
-	result, err := invoke.DelegateAdd(netconf["type"].(string), netconfBytes, nil)
+	result, err := invoke.DelegateAdd(context.TODO(), netconf["type"].(string), netconfBytes, nil)
 	if err != nil {
 		return err
 	}

plugins/meta/flannel/flannel_linux.go

@@ -19,6 +19,7 @@
 package main
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
 	"github.com/containernetworking/cni/pkg/invoke"
@@ -82,5 +83,5 @@ func doCmdDel(args *skel.CmdArgs, n *NetConf) error {
 		return fmt.Errorf("failed to parse netconf: %v", err)
 	}
 
-	return invoke.DelegateDel(nc.Type, netconfBytes, nil)
+	return invoke.DelegateDel(context.TODO(), nc.Type, netconfBytes, nil)
 }

plugins/meta/portmap/portmap_integ_test.go

@@ -16,6 +16,7 @@ package main
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"math/rand"
 	"net"
@@ -121,7 +122,7 @@ var _ = Describe("portmap integration tests", func() {
 				return nil
 			}
 			netDeleted = true
-			return cniConf.DelNetworkList(configList, &runtimeConfig)
+			return cniConf.DelNetworkList(context.TODO(), configList, &runtimeConfig)
 		}
 
 		// we'll also manually check the iptables chains
@@ -130,7 +131,7 @@ var _ = Describe("portmap integration tests", func() {
 		dnatChainName := genDnatChain("cni-portmap-unit-test", runtimeConfig.ContainerID).name
 
 		// Create the network
-		resI, err := cniConf.AddNetworkList(configList, &runtimeConfig)
+		resI, err := cniConf.AddNetworkList(context.TODO(), configList, &runtimeConfig)
 		Expect(err).NotTo(HaveOccurred())
 		defer deleteNetwork()