Add functional tests for the resource types API

[FeihuJiang]

We currently have no tempest test for the resource types API:

GET
/v1/​{tenant_id}​/resource_types
Lists the supported template resource types.

GET
/v1/​{tenant_id}​/resource_types/​{type_name}
​Shows the interface schema for a specified resource type.

GET
/v1/​{tenant_id}​/resource_types/​{type_name}​/template
Shows the template representation for a specified resource type.

It would be good to add coverage to ensure the resource types APIs work correctly.

[FeihuJiang (jiangfeihu)]

Basic test for the resource type list and show API has posted:
https://review.openstack.org/#/c/103775/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/103775
Committed: https://git.openstack.org/cgit/openstack/tempest/commit/?id=b5fac2af7e09b3f150d8ee6f3ab9d6824907159b
Submitter: Jenkins
Branch: master

commit b5fac2af7e09b3f150d8ee6f3ab9d6824907159b
Author: FeihuJiang <email address hidden>
Date: Tue Jul 1 07:30:58 2014 +0000

    Adds an orchestration API test for resource types

    Adds an orchestration API test to ensure
    the resource types APIs work correctly.

    Change-Id: I9a28332debaad28b3725711f180242ac30744e76
    Closes-Bug: #1336169