InfluxDB 2 API: Documents Service implementation doesn't cover the swagger definition

The following specification of /documents/templates allow to create Template but https://github.com/influxdata/influxdb/commit/5954db8c4d3881c30e452a9131904b06972edfd3 introduces read-only document store.

https://github.com/influxdata/influxdb/blob/6303937b93950b696ce3ff3702e266b685418048/http/swagger.yml#L144

  /documents/templates:
    get:
      operationId: GetDocumentsTemplates
      tags:
        - Templates
      parameters:
        - $ref: "#/components/parameters/TraceSpan"
        - in: query
          name: org
          description: Specifies the name of the organization of the template.
          schema:
            type: string
        - in: query
          name: orgID
          description: Specifies the organization ID of the template.
          schema:
            type: string
      responses:
        "200":
          description: A list of template documents
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Documents"
        default:
          description: Unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"
    post:
      operationId: PostDocumentsTemplates
      tags:
        - Templates
      summary: Create a template
      parameters:
        - $ref: "#/components/parameters/TraceSpan"
      requestBody:
        description: Template that will be created
        required: true
        content:
          application/json:
            schema:
              $ref: "#/components/schemas/DocumentCreate"
      responses:
        "201":
          description: Template created
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Document"
        default:
          description: Unexpected error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"

1. Cannot retrieve DocumentTemplates by org Name

--> GET http://127.0.0.1:9999/api/v2/documents/templates?org=org1606209676706-IT
<-- 400 Bad Request http://127.0.0.1:9999/api/v2/documents/templates?org=org1606209676706-IT 
<-- {"code":"invalid","message":"invalid org id for permission: invalid ID"}

2. Cannot create DocumentTemplate

--> POST http://127.0.0.1:9999/api/v2/documents/templates
--> {"meta":{"name":"document-name1606209306216-IT","version":"1"},"content":"templates content","orgID":"cb6bc76225fdfc6c","labels":["06aa61988a5c8000"]}
<-- 405 Method Not Allowed http://127.0.0.1:9999/api/v2/documents/templates 

cc @GeorgeMac

Start with http/swagger.yml at the /documents/templates definition and reproduce the GET request with an organization name and the POST request shown in the issue. Trace the Documents Service handlers and permission lookup for these endpoints. Done means the implemented behavior matches the documented read and create operations, including organization-name lookup.