[MM-49989] Pass a context.Context to Client4 methods (#22922)

* Migrate all method in model/client4.go to accept a context.Context

* Fix th.*Client

* Fix remaining issues

* Empty commit to triger CI

* Fix test

* Add cancellation test

* Test that returned error is context.Canceled

* Fix bad merge

* Update mmctl code

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/cmd/mmctl/commands/sampledata.go

@@ -5,6 +5,7 @@
 package commands
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
@@ -93,7 +94,7 @@ func uploadAndProcess(c client.Client, zipPath string, isLocal bool) error {
 	}
 
 	// create session
-	us, _, err := c.CreateUpload(&model.UploadSession{
+	us, _, err := c.CreateUpload(context.TODO(), &model.UploadSession{
 		Filename: info.Name(),
 		FileSize: info.Size(),
 		Type:     model.UploadTypeImport,
@@ -106,7 +107,7 @@ func uploadAndProcess(c client.Client, zipPath string, isLocal bool) error {
 	printer.PrintT("Upload session successfully created, ID: {{.Id}} ", us)
 
 	// upload file
-	finfo, _, err := c.UploadData(us.Id, zipFile)
+	finfo, _, err := c.UploadData(context.TODO(), us.Id, zipFile)
 	if err != nil {
 		return fmt.Errorf("failed to upload data: %w", err)
 	}
@@ -114,7 +115,7 @@ func uploadAndProcess(c client.Client, zipPath string, isLocal bool) error {
 	printer.PrintT("Import file successfully uploaded, name: {{.Name}}", finfo)
 
 	// process
-	job, _, err := c.CreateJob(&model.Job{
+	job, _, err := c.CreateJob(context.TODO(), &model.Job{
 		Type: model.JobTypeImportProcess,
 		Data: map[string]string{
 			"import_file": us.Id + "_" + finfo.Name,
@@ -127,7 +128,7 @@ func uploadAndProcess(c client.Client, zipPath string, isLocal bool) error {
 	printer.PrintT("Import process job successfully created, ID: {{.Id}}", job)
 
 	for {
-		job, _, err = c.GetJob(job.Id)
+		job, _, err = c.GetJob(context.TODO(), job.Id)
 		if err != nil {
 			return fmt.Errorf("failed to get import job status: %w", err)
 		}