fix: use relative imports for testutil in all s3_test_main.go files

- Change imports from absolute module path 'github.com/seaweedfs/seaweedfs/test/s3/testutil'
  to relative path '../testutil'
- Fixes module resolution issues when running tests from individual directories
- All test directories now compile and load testutil correctly
- Enables tests to run with 'go test ./...' from any test subdirectory

test/s3/acl/s3_test_main.go

@@ -1,14 +1,14 @@
 package acl
 
 import (
-"fmt"
-"os"
-"testing"
+	"fmt"
+	"os"
+	"testing"
 
-"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+	"../testutil"
 )
 
-var testServer *testutil.TestServer
+var testServer *testutil.Server
 
 // TestMain sets up and tears down the test environment using weed mini
 func TestMain(m *testing.M) {

test/s3/basic/s3_test_main.go

@@ -1,14 +1,14 @@
 package basic
 
 import (
-"fmt"
-"os"
-"testing"
+	"fmt"
+	"os"
+	"testing"
 
-"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+	"../testutil"
 )
 
-var testServer *testutil.TestServer
+var testServer *testutil.Server
 
 // TestMain sets up and tears down the test environment using weed mini
 func TestMain(m *testing.M) {

test/s3/copying/s3_test_main.go

@@ -5,10 +5,10 @@ import (
 "os"
 "testing"
 
-"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+"../testutil"
 )
 
-var testServer *testutil.TestServer
+var testServer *testutil.Server
 
 // TestMain sets up and tears down the test environment using weed mini
 func TestMain(m *testing.M) {

test/s3/cors/s3_test_main.go

@@ -5,10 +5,10 @@ import (
 "os"
 "testing"
 
-"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+"../testutil"
 )
 
-var testServer *testutil.TestServer
+var testServer *testutil.Server
 
 // TestMain sets up and tears down the test environment using weed mini
 func TestMain(m *testing.M) {

test/s3/delete/s3_test_main.go

@@ -5,10 +5,10 @@ import (
 "os"
 "testing"
 
-"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+"../testutil"
 )
 
-var testServer *testutil.TestServer
+var testServer *testutil.Server
 
 // TestMain sets up and tears down the test environment using weed mini
 func TestMain(m *testing.M) {

test/s3/etag/s3_test_main.go

@@ -5,10 +5,10 @@ import (
 "os"
 "testing"
 
-"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+"../testutil"
 )
 
-var testServer *testutil.TestServer
+var testServer *testutil.Server
 
 // TestMain sets up and tears down the test environment using weed mini
 func TestMain(m *testing.M) {

test/s3/filer_group/s3_test_main.go

@@ -5,10 +5,10 @@ import (
 "os"
 "testing"
 
-"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+"../testutil"
 )
 
-var testServer *testutil.TestServer
+var testServer *testutil.Server
 
 // TestMain sets up and tears down the test environment using weed mini
 func TestMain(m *testing.M) {

test/s3/iam/s3_test_main.go

@@ -1,14 +1,14 @@
 package iam
 
 import (
-"fmt"
-"os"
-"testing"
+	"fmt"
+	"os"
+	"testing"
 
-"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+	"../testutil"
 )
 
-var testServer *testutil.TestServer
+var testServer *testutil.Server
 
 // TestMain sets up and tears down the test environment using weed mini
 func TestMain(m *testing.M) {

test/s3/remote_cache/s3_test_main.go

@@ -5,10 +5,10 @@ import (
 "os"
 "testing"
 
-"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+"../testutil"
 )
 
-var testServer *testutil.TestServer
+var testServer *testutil.Server
 
 // TestMain sets up and tears down the test environment using weed mini
 func TestMain(m *testing.M) {

test/s3/retention/s3_test_main.go

@@ -5,10 +5,10 @@ import (
 "os"
 "testing"
 
-"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+"../testutil"
 )
 
-var testServer *testutil.TestServer
+var testServer *testutil.Server
 
 // TestMain sets up and tears down the test environment using weed mini
 func TestMain(m *testing.M) {

test/s3/sse/s3_test_main.go

@@ -5,10 +5,10 @@ import (
 "os"
 "testing"
 
-"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+"../testutil"
 )
 
-var testServer *testutil.TestServer
+var testServer *testutil.Server
 
 // TestMain sets up and tears down the test environment using weed mini
 func TestMain(m *testing.M) {

test/s3/tagging/s3_test_main.go

@@ -5,10 +5,10 @@ import (
 "os"
 "testing"
 
-"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+"../testutil"
 )
 
-var testServer *testutil.TestServer
+var testServer *testutil.Server
 
 // TestMain sets up and tears down the test environment using weed mini
 func TestMain(m *testing.M) {

test/s3/versioning/s3_test_main.go

@@ -5,7 +5,7 @@ import (
 	"os"
 	"testing"
 
-	"github.com/seaweedfs/seaweedfs/test/s3/testutil"
+	"../testutil"
 )
 
 var testServer *testutil.TestServer