k8s 1.18 import (#2651)

* k8s 1.18 import wip

backup, cmd, controller, generated, restic, restore, serverstatusrequest, test and util

Signed-off-by: Andrew Lavery <laverya@umich.edu>

* go mod tidy

Signed-off-by: Andrew Lavery <laverya@umich.edu>

* add changelog file

Signed-off-by: Andrew Lavery <laverya@umich.edu>

* go fmt

Signed-off-by: Andrew Lavery <laverya@umich.edu>

* update code-generator and controller-gen in CI

Signed-off-by: Andrew Lavery <laverya@umich.edu>

* checkout proper code-generator version, regen

Signed-off-by: Andrew Lavery <laverya@umich.edu>

* fix remaining calls

Signed-off-by: Andrew Lavery <laverya@umich.edu>

* regenerate CRDs with ./hack/update-generated-crd-code.sh

Signed-off-by: Andrew Lavery <laverya@umich.edu>

* use existing context in restic and server

Signed-off-by: Andrew Lavery <laverya@umich.edu>

* fix test cases by resetting resource version

also use main library go context, not golang.org/x/net/context, in pkg/restore/restore.go

Signed-off-by: Andrew Lavery <laverya@umich.edu>

* clarify changelog message

Signed-off-by: Andrew Lavery <laverya@umich.edu>

* use github.com/kubernetes-csi/external-snapshotter/v2@v2.2.0-rc1

Signed-off-by: Andrew Lavery <laverya@umich.edu>

* run 'go mod tidy' to remove old external-snapshotter version

Signed-off-by: Andrew Lavery <laverya@umich.edu>

pkg/serverstatusrequest/process_test.go

@@ -17,6 +17,7 @@ limitations under the License.
 package serverstatusrequest
 
 import (
+	"context"
 	"sort"
 	"testing"
 	"time"
@@ -161,7 +162,7 @@ func TestProcess(t *testing.T) {
 				assert.EqualError(t, err, tc.expectedErrMsg)
 			}
 
-			res, err := client.VeleroV1().ServerStatusRequests(tc.req.Namespace).Get(tc.req.Name, metav1.GetOptions{})
+			res, err := client.VeleroV1().ServerStatusRequests(tc.req.Namespace).Get(context.TODO(), tc.req.Name, metav1.GetOptions{})
 			if tc.expected == nil {
 				assert.Nil(t, res)
 				assert.True(t, apierrors.IsNotFound(err))