The resource type API need to increase the inspection

[fengchaoyang]

When I use resource type api to create a new resource type, I find if the attribute length_max less than length_min, max less than min, the resource type can also be created, such as:
POST /v1/resource_type HTTP/1.1
Content-Type: application/json
Content-Length: 360

{
  "attributes": {
    "display_name": {
      "required": true,
      "type": "string"
    },
    "enabled": {
      "required": false,
      "type": "bool"
    },
    "myid": {
      "type": "uuid"
    },
    "prefix": {
      "max_length": 3,
      "min_length": 8,
      "required": false,
      "type": "string"
    },
    "size": {
      "max": 32.8,
      "min": 5,
      "type": "number"
    }
  },
  "name": "my_custom_type"
}

| ipmi | |
| my_custom_type | - enabled: required: False , type: bool |
| | - prefix: min_length: 8 , max_length: 3 , type: string , required: False |
| | - size: max: 5 , required: True , type: number , min: 32.5 |
| | - display_name: min_length: 0 , max_length: 255 , type: string , required: True |
| | - myid: required: True , type: uuid
So we need to check whether the min is less than or equal to Max

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/361604

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/361604
Committed: https://git.openstack.org/cgit/openstack/gnocchi/commit/?id=6a8054cfefb041f4055406fc374e97190e04c1ce
Submitter: Jenkins
Branch: master

commit 6a8054cfefb041f4055406fc374e97190e04c1ce
Author: fengchaoyang <email address hidden>
Date: Sat Aug 27 23:55:26 2016 +0800

    Check whether the resource type attribute min is less than or equal to max

    When use resource type api to create a new resource type,
    check whether min and min_length is less than max and max_length

    Closes-Bug: #1617561
    Change-Id: Iccfe751f274066b4c11d15901b375dc1177e1887