v2 modularization: relocate shared internal helpers into core/v2

internal/collections and internal/lib/formatting were reached by 6 submodules (aws, azure, gcp, teststructure, terraform, terragrunt) across module boundaries, which only works under go.work and would fail standalone/release builds (a v2 submodule must not depend on the frozen v1 root module). Move them to modules/core/v2/collections and modules/core/v2/formatting (core is a universal dependency); also flattens internal/lib/formatting per the RFC. Root internal/ is now empty and removed.

Author: james00012

modules/aws/region.go

@@ -8,7 +8,7 @@ import (
 	"github.com/aws/aws-sdk-go-v2/aws"
 	"github.com/aws/aws-sdk-go-v2/service/ec2"
 	"github.com/aws/aws-sdk-go-v2/service/ssm"
-	"github.com/gruntwork-io/terratest/internal/collections"
+	"github.com/gruntwork-io/terratest/modules/core/v2/collections"
 	"github.com/gruntwork-io/terratest/modules/core/v2/logger"
 	"github.com/gruntwork-io/terratest/modules/core/v2/random"
 	"github.com/gruntwork-io/terratest/modules/core/v2/testing"

modules/azure/region.go

@@ -3,7 +3,7 @@ package azure
 import (
 	"context"
 
-	"github.com/gruntwork-io/terratest/internal/collections"
+	"github.com/gruntwork-io/terratest/modules/core/v2/collections"
 	"github.com/gruntwork-io/terratest/modules/core/v2/random"
 	"github.com/gruntwork-io/terratest/modules/core/v2/testing"
 	"github.com/stretchr/testify/require"

internal/collections/collections.go modules/core/collections/collections.gointernal/collections/collections.go renamed to modules/core/collections/collections.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/gruntwork-io/terratest/internal/collections"
+	"github.com/gruntwork-io/terratest/modules/core/v2/collections"
 	"github.com/stretchr/testify/assert"
 )
 

internal/collections/collections_test.go …les/core/collections/collections_test.gointernal/collections/collections_test.go renamed to modules/core/collections/collections_test.go internal/collections/collections_test.go renamed to modules/core/collections/collections_test.go

@@ -3,7 +3,7 @@ package formatting_test
 import (
 	"testing"
 
-	"github.com/gruntwork-io/terratest/internal/lib/formatting"
+	"github.com/gruntwork-io/terratest/modules/core/v2/formatting"
 	"github.com/stretchr/testify/assert"
 )
 

internal/lib/formatting/format.go modules/core/formatting/format.gointernal/lib/formatting/format.go renamed to modules/core/formatting/format.go

@@ -5,7 +5,7 @@ import (
 	"os"
 	"strings"
 
-	"github.com/gruntwork-io/terratest/internal/collections"
+	"github.com/gruntwork-io/terratest/modules/core/v2/collections"
 	"github.com/gruntwork-io/terratest/modules/core/v2/logger"
 	"github.com/gruntwork-io/terratest/modules/core/v2/random"
 	"github.com/gruntwork-io/terratest/modules/core/v2/testing"

internal/lib/formatting/format_test.go modules/core/formatting/format_test.gointernal/lib/formatting/format_test.go renamed to modules/core/formatting/format_test.go

@@ -7,7 +7,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/gruntwork-io/terratest/internal/lib/formatting"
+	"github.com/gruntwork-io/terratest/modules/core/v2/formatting"
 )
 
 // TerraformCommandsWithLockSupport is a list of all the Terraform commands that

modules/gcp/region.go

@@ -3,7 +3,7 @@ package terragrunt
 import (
 	"context"
 
-	"github.com/gruntwork-io/terratest/internal/lib/formatting"
+	"github.com/gruntwork-io/terratest/modules/core/v2/formatting"
 	"github.com/gruntwork-io/terratest/modules/core/v2/testing"
 	"github.com/stretchr/testify/require"
 )

modules/terraform/format.go

@@ -6,7 +6,7 @@ import (
 	"path/filepath"
 
 	go_commons_collections "github.com/gruntwork-io/go-commons/collections"
-	"github.com/gruntwork-io/terratest/internal/collections"
+	"github.com/gruntwork-io/terratest/modules/core/v2/collections"
 	"github.com/gruntwork-io/terratest/modules/core/v2/files"
 	"github.com/mattn/go-zglob"
 )