refactor: standardize Ginkgo suite initialization across all test packages

Separate suite initialization from test specs by creating dedicated
*_suite_test.go files for consistency and maintainability.

Changes:
- Created dedicated suite files for containers, finalize, jres, and supply packages
- Moved TestXxx() functions and RunSpecs() calls to respective suite files
- Removed 'testing' import from test files that no longer need it
- Follows Ginkgo best practices and community standards

All 294 specs verified passing with identical counts before and after refactoring.

Author: ramonskie

src/java/containers/container_test.go

@@ -3,7 +3,6 @@ package containers_test
 import (
 	"os"
 	"path/filepath"
-	"testing"
 
 	"github.com/cloudfoundry/java-buildpack/src/java/common"
 	"github.com/cloudfoundry/java-buildpack/src/java/containers"
@@ -12,11 +11,6 @@ import (
 	. "github.com/onsi/gomega"
 )
 
-func TestContainers(t *testing.T) {
-	RegisterFailHandler(Fail)
-	RunSpecs(t, "Containers Suite")
-}
-
 var _ = Describe("Container Registry", func() {
 	var (
 		ctx      *common.Context

src/java/containers/containers_suite_test.go

@@ -0,0 +1,13 @@
+package containers_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+func TestContainers(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Containers Suite")
+}

src/java/finalize/finalize_suite_test.go

@@ -0,0 +1,13 @@
+package finalize_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+func TestFinalize(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Finalize Suite")
+}

src/java/finalize/finalize_test.go

@@ -3,7 +3,6 @@ package finalize_test
 import (
 	"os"
 	"path/filepath"
-	"testing"
 	"time"
 
 	"github.com/cloudfoundry/java-buildpack/src/java/finalize"
@@ -12,11 +11,6 @@ import (
 	. "github.com/onsi/gomega"
 )
 
-func TestFinalize(t *testing.T) {
-	RegisterFailHandler(Fail)
-	RunSpecs(t, "Finalize Suite")
-}
-
 var _ = Describe("Finalize", func() {
 	var (
 		buildDir  string

src/java/frameworks/frameworks_suite_test.go

@@ -0,0 +1,13 @@
+package frameworks_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+func TestFrameworks(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Frameworks Suite")
+}

src/java/jres/jre_test.go

@@ -3,7 +3,6 @@ package jres_test
 import (
 	"os"
 	"path/filepath"
-	"testing"
 	"time"
 
 	"github.com/cloudfoundry/java-buildpack/src/java/common"
@@ -13,11 +12,6 @@ import (
 	. "github.com/onsi/gomega"
 )
 
-func TestJREs(t *testing.T) {
-	RegisterFailHandler(Fail)
-	RunSpecs(t, "JREs Suite")
-}
-
 var _ = Describe("JRE Registry", func() {
 	var (
 		ctx      *common.Context

src/java/jres/jres_suite_test.go

@@ -0,0 +1,13 @@
+package jres_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+func TestJREs(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "JREs Suite")
+}

src/java/supply/supply_suite_test.go

@@ -0,0 +1,13 @@
+package supply_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+func TestSupply(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Supply Suite")
+}

src/java/supply/supply_test.go

@@ -3,7 +3,6 @@ package supply_test
 import (
 	"os"
 	"path/filepath"
-	"testing"
 	"time"
 
 	"github.com/cloudfoundry/java-buildpack/src/java/supply"
@@ -12,11 +11,6 @@ import (
 	. "github.com/onsi/gomega"
 )
 
-func TestSupply(t *testing.T) {
-	RegisterFailHandler(Fail)
-	RunSpecs(t, "Supply Suite")
-}
-
 var _ = Describe("Supply", func() {
 	var (
 		buildDir string