OpenStack keystone CLI How to assign multiple roles to a user

1)
* Create a New Role
#keystone --os-username admin --os-password nova --os-auth-url http://localhost:5000/v2.0/ --os-tenant-name admin role-create --name tenantadmin1

2)
List All Roles
#keystone --os-username admin --os-password nova --os-auth-url http://localhost:5000/v2.0/ --os-tenant-name admin role-list

3)
List All Projects
#keystone --os-username admin --os-password nova --os-auth-url http://localhost:5000/v2.0/ --os-tenant-name admin tenant-list

4)
* This command will create a new user and automatically add the role "_member_" to that user with project "4da17230c6d24b7795d120943cbfd05c" (default_project_id).Please check keystone tables "user" and "user_project_metadata".
#keystone --os-username admin --os-password nova --os-auth-url http://localhost:5000/v2.0/ --os-tenant-name admin user-create --name saju5 --tenant 4da17230c6d24b7795d120943cbfd05c --pass saju5 --enabled true

5) 
* This command will add a particular role to user
#keystone --os-username admin --os-password nova --os-auth-url http://localhost:5000/v2.0/ --os-tenant-name admin user-role-add --user cf86e3655cc940c3ae0388a0e0a1b2dc --role ff198db3fd7b4c0ca4804e97f9d8ddb3 --tenant 4da17230c6d24b7795d120943cbfd05c