Bugfix inconsistent applies of ListAttributes (#328)

* sort the list of ACLs for MongoDBFlex

* Fix and test other cases of ListAttribute ordering

* fix linting

* revert sorting changes, introduce new reconcilestrlist function

* merge main

* Fix rabbitmq

* fix segmentation fault

* Improve testing

* pass context to mapfields, minor name fixes

stackit/internal/utils/utils.go

@@ -0,0 +1,62 @@
+package utils
+
+import (
+	"fmt"
+
+	"github.com/hashicorp/terraform-plugin-framework/types/basetypes"
+
+	"github.com/hashicorp/terraform-plugin-framework/types"
+)
+
+// ReconcileStringSlices reconciles two string lists by removing elements from the
+// first list that are not in the second list and appending elements from the
+// second list that are not in the first list.
+// This preserves the order of the elements in the first list that are also in
+// the second list, which is useful when using ListAttributes in Terraform.
+// The source of truth for the order is the first list and the source of truth for the content is the second list.
+func ReconcileStringSlices(list1, list2 []string) []string {
+	// Create a copy of list1 to avoid modifying the original list
+	list1Copy := append([]string{}, list1...)
+
+	// Create a map to quickly check if an element is in list2
+	inList2 := make(map[string]bool)
+	for _, elem := range list2 {
+		inList2[elem] = true
+	}
+
+	// Remove elements from list1Copy that are not in list2
+	i := 0
+	for _, elem := range list1Copy {
+		if inList2[elem] {
+			list1Copy[i] = elem
+			i++
+		}
+	}
+	list1Copy = list1Copy[:i]
+
+	// Append elements to list1Copy that are in list2 but not in list1Copy
+	inList1 := make(map[string]bool)
+	for _, elem := range list1Copy {
+		inList1[elem] = true
+	}
+	for _, elem := range list2 {
+		if !inList1[elem] {
+			list1Copy = append(list1Copy, elem)
+		}
+	}
+
+	return list1Copy
+}
+
+func ListValuetoStringSlice(list basetypes.ListValue) ([]string, error) {
+	result := []string{}
+	for _, el := range list.Elements() {
+		elStr, ok := el.(types.String)
+		if !ok {
+			return result, fmt.Errorf("expected record to be of type %T, got %T", types.String{}, elStr)
+		}
+		result = append(result, elStr.ValueString())
+	}
+
+	return result, nil
+}