add 'tags' in request body of projects

first, add 'tags' in request body of projects when create
and update.
second, put necessary parameter 'name'in first place when
create and update for convenience.

Change-Id: I46a20c3e36dc47db3ec20d39da9036f19e5e4e5c

api-ref/source/v3/parameters.yaml

@@ -1277,6 +1277,13 @@ project_parent_id_response_body:
   required: true
   type: string
   min_version: 3.4
+project_tags_request_body:
+  description: |
+    A list of simple strings assigned to a project.
+    Tags can be used to classify projects into groups.
+  in: body
+  required: false
+  type: array
 projects:
   description: |
     A list of ``project`` objects, each containing:

api-ref/source/v3/projects.inc

@@ -119,12 +119,13 @@ Parameters
 .. rest_parameters:: parameters.yaml
 
    - project: project
+   - name: project_name_request_body
    - is_domain: is_domain_request_body
    - description: project_description_request_body
    - domain_id: project_domain_id_request_body
    - enabled: project_enabled_request_body
-   - name: project_name_request_body
    - parent_id: project_parent_id_request_body
+   - tags: project_tags_request_body
 
 Examples
 ~~~~~~~~
@@ -264,11 +265,12 @@ Parameters
 
    - project_id: project_id_path
    - project: project
+   - name: project_name_update_request_body
    - is_domain: is_domain_request_body
    - description: project_description_request_body
    - domain_id: project_domain_id_update_request_body
    - enabled: project_enabled_update_request_body
-   - name: project_name_update_request_body
+   - tags: project_tags_request_body
 
 Example
 ~~~~~~~