fix: add readme for test module

tests/module/README.md

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+# module
+
+<!-- BEGIN_TF_DOCS -->
+### Requirements
+
+| Name | Version |
+|------|---------|
+| <a name="requirement_terraform"></a> [terraform](#requirement_terraform) | >= 1.0.0 |
+| <a name="requirement_openstack"></a> [openstack](#requirement_openstack) | ~> 2.1.0 |
+
+### Providers
+
+| Name | Version |
+|------|---------|
+| <a name="provider_openstack"></a> [openstack](#provider_openstack) | ~> 2.1.0 |
+| <a name="provider_vault"></a> [vault](#provider_vault) | n/a |
+
+### Modules
+
+| Name | Source | Version |
+|------|--------|---------|
+| <a name="module_landing_zone"></a> [landing_zone](#module_landing_zone) | ../../ | n/a |
+
+### Resources
+
+| Name | Type |
+|------|------|
+| [openstack_networking_network_v2.ext_floating](https://registry.terraform.io/providers/terraform-provider-openstack/openstack/latest/docs/data-sources/networking_network_v2) | data source |
+| [vault_kv_secret_v2.openstack_provider_project_info](https://registry.terraform.io/providers/hashicorp/vault/latest/docs/data-sources/kv_secret_v2) | data source |
+| [vault_kv_secret_v2.openstack_provider_project_user](https://registry.terraform.io/providers/hashicorp/vault/latest/docs/data-sources/kv_secret_v2) | data source |
+| [vault_kv_secret_v2.openstack_provider_region](https://registry.terraform.io/providers/hashicorp/vault/latest/docs/data-sources/kv_secret_v2) | data source |
+
+### Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| <a name="input_application_subnetpool_cidr_blocks"></a> [application_subnetpool_cidr_blocks](#input_application_subnetpool_cidr_blocks) | The CIDR blocks for the application subnet pool | `list(string)` | <pre>[<br>  "192.168.0.0/21"<br>]</pre> | no |
+| <a name="input_application_subnetpool_id"></a> [application_subnetpool_id](#input_application_subnetpool_id) | The id of the subnetpool to create the public (first 2 tier) networks from.<br>Since this module can route private subnets to the backbone, it needs to make sure it's not creating overlapping subnets. | `string` | `null` | no |
+| <a name="input_architecture_tiers"></a> [architecture_tiers](#input_architecture_tiers) | The type of architecture.<br>Can be either 0, 1, 2 or 3.<br>Tier 0 will not create any subnets or networks.<br>Tier 1 will only create a single frontend subnet.<br>Tier 2 will create a frontend and backend subnet.<br>Tier 3 will create a frontend, backend and database subnet. | `number` | `1` | no |
+| <a name="input_attach_to_external"></a> [attach_to_external](#input_attach_to_external) | Whether the frontend subnet should be routed or not to the external LAN.<br>This options implies that you have sufficient permissions to configure static route on the backbone infrastructure.<br>This will create an static route entry in the route table of the backbone router, in order to make your project available from the outside. | `bool` | `false` | no |
+| <a name="input_backend_subnet_prefix_len"></a> [backend_subnet_prefix_len](#input_backend_subnet_prefix_len) | The prefix length of the backend subnet. Must be between 20 and 32. | `number` | `24` | no |
+| <a name="input_create_application_subnetpool"></a> [create_application_subnetpool](#input_create_application_subnetpool) | Whether the module should create an application subnet pool for this project, or use an existing one. | `bool` | `true` | no |
+| <a name="input_create_database_subnetpool"></a> [create_database_subnetpool](#input_create_database_subnetpool) | Whether the module should create a database subnet pool for this project, or use an existing one. | `bool` | `true` | no |
+| <a name="input_create_default_secgroups"></a> [create_default_secgroups](#input_create_default_secgroups) | Whether to create default security groups or not.<br>Depending on your choice of architecture tiering, will create security groups so that each tier can connect to the one below.<br>Security groups for the database tier will be created for mariadb, postgresql and redis.<br>A default security group allowing ssh connection will also be created. | `bool` | `false` | no |
+| <a name="input_database_secgroup_strict"></a> [database_secgroup_strict](#input_database_secgroup_strict) | Defines whether the security groups for the database network should be strict.<br>In strict mode, egress is only allowed to the backend network. | `bool` | `false` | no |
+| <a name="input_database_subnet_prefix_len"></a> [database_subnet_prefix_len](#input_database_subnet_prefix_len) | The prefix length of the database subnet. Must be between 24 and 32. | `number` | `24` | no |
+| <a name="input_database_subnetpool_cidr_blocks"></a> [database_subnetpool_cidr_blocks](#input_database_subnetpool_cidr_blocks) | The CIDR blocks for the database subnet pool | `list(string)` | <pre>[<br>  "192.168.8.0/23"<br>]</pre> | no |
+| <a name="input_database_subnetpool_id"></a> [database_subnetpool_id](#input_database_subnetpool_id) | The id of the subnetpool to create the databse network from.<br>Since this module can route private subnets to the backbone, it needs to make sure it's not creating overlapping subnets. | `string` | `null` | no |
+| <a name="input_frontend_subnet_prefix_len"></a> [frontend_subnet_prefix_len](#input_frontend_subnet_prefix_len) | The prefix length of the frontend subnet. Must be between 20 and 32. | `number` | `24` | no |
+| <a name="input_project_domain"></a> [project_domain](#input_project_domain) | The domain where this project will be created | `string` | `"default"` | no |
+| <a name="input_project_tags"></a> [project_tags](#input_project_tags) | The tags to append to this project | `list(string)` | `[]` | no |
+| <a name="input_public_nameservers"></a> [public_nameservers](#input_public_nameservers) | A list of public DNS servers to upstreams requests to in your subnets.<br>This is not necessary if your openstack deployment already has configured default upstreams for neutron. | `list(string)` | `[]` | no |
+
+### Outputs
+
+No outputs.
+<!-- END_TF_DOCS -->