fix: postgresqlflex flavor errors (#107)

feat: enable old v2 flavor handling
Co-authored-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>
Reviewed-on: #107

docs/resources/sqlserverflexalpha_database.md

@@ -1,63 +0,0 @@
----
-# generated by https://github.com/hashicorp/terraform-plugin-docs
-page_title: "stackitprivatepreview_sqlserverflexalpha_database Resource - stackitprivatepreview"
-subcategory: ""
-description: |-
-  
----
-
-# stackitprivatepreview_sqlserverflexalpha_database (Resource)
-
-
-
-## Example Usage
-
-```terraform
-resource "stackitprivatepreview_sqlserverflexalpha_database" "example" {
-  project_id    = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
-  instance_id   = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
-  collation     = ""
-  compatibility = "160"
-  name          = ""
-  owner         = ""
-}
-
-# Only use the import statement, if you want to import a existing sqlserverflex database
-import {
-  to = stackitprivatepreview_sqlserverflexalpha_database.import-example
-  id = "${var.project_id},${var.region},${var.sql_instance_id},${var.sql_user_id}"
-}
-
-import {
-  to = stackitprivatepreview_sqlserverflexalpha_database.import-example
-  identity = {
-    project_id  = "project.id"
-    region      = "region"
-    instance_id = "instance.id"
-    database_id = "database.id"
-  }
-}
-```
-
-<!-- schema generated by tfplugindocs -->
-## Schema
-
-### Required
-
-- `name` (String) The name of the database.
-- `owner` (String) The owner of the database.
-
-### Optional
-
-- `collation` (String) The collation of the database. This database collation should match the *collation_name* of one of the collations given by the **Get database collation list** endpoint.
-- `compatibility` (Number) CompatibilityLevel of the Database.
-- `database_name` (String) The name of the database.
-- `instance_id` (String) The ID of the instance.
-- `project_id` (String) The STACKIT project ID.
-- `region` (String) The region which should be addressed
-
-### Read-Only
-
-- `collation_name` (String) The collation of the database. This database collation should match the *collation_name* of one of the collations given by the **Get database collation list** endpoint.
-- `compatibility_level` (Number) CompatibilityLevel of the Database.
-- `id` (Number) The id of the database.