adds and uses db dump from a fresh 0.20.8 install

We tried to use racktables_api with our racktables 0.20.8 install, however it seems that the database schema is not supported by current racktables_api. Running tests give a few failures:

```
  Scenario: Adding a port                    # features/objects/querying.feature:224
    Given I have POSTed this to "/object":   # features/step_definitions/api.rb:6
      """
      {
        "name": "foo",
        "type": "VM"
      }
      """
    When I PATCH this to "/object?name=foo": # features/step_definitions/api.rb:14
      """
      {
        "ports":
        {
          "_push":
          {
            "name": "eth0",
            "type": "1000Base-T",
            "l2address": "005056bc449b"
          }
        }
      }
      """
      Bad query: {"type"=>"1000Base-T"} (Logistician::HTTPError::Class)
      ./lib/logistician/sequel/repository.rb:290:in `create'
      ./lib/logistician/sequel/repository.rb:111:in `block (3 levels) in publish'
      ./lib/logistician/sequel/write.rb:149:in `call'
      ./lib/logistician/sequel/write.rb:149:in `block in apply_to!'
      ./lib/logistician/sequel/write.rb:147:in `each'
      ./lib/logistician/sequel/write.rb:147:in `apply_to!'
      ./lib/logistician/sequel/update.rb:39:in `block in do_foreign!'
      ./lib/logistician/sequel/update.rb:38:in `do_foreign!'
      ./lib/logistician/sequel/update.rb:21:in `do!'
      ./lib/logistician/repository/multi_resource.rb:104:in `patch'
      ./lib/logistician/resource.rb:49:in `call'
      ./lib/logistician/repository/shared.rb:61:in `block in call'
      ./lib/logistician/context.rb:54:in `use'
      ./lib/logistician/repository/shared.rb:57:in `call'
      (eval):13:in `each'
      ./lib/logistician/context.rb:37:in `call'
      ./lib/logistician/context.rb:37:in `call'
      ./spec/helper/object_router.rb:55:in `mock_request'
      ./spec/helper/object_router.rb:65:in `/\AI PATCH this to "(.*)":/'
      ./features/support/api.rb:6:in `block in <top (required)>'
      features/objects/querying.feature:232:in `When I PATCH this to "/object?name=foo":'
    And I request "/object"                  # features/step_definitions/api.rb:2
    Then the response should be like:        # features/step_definitions/api.rb:30
      """
      [
        {
           "name"   : "foo",
           "type"   : "VM",
           "ports" : [
              {
                "name": "eth0",
                "type": "1000Base-T",
                "l2address": "005056bc449b",
                ...
              }
            ],
            ...
        }
      ]
      """

Failing Scenarios:
cucumber features/objects/querying.feature:224 # Scenario: Adding a port

9 scenarios (1 failed, 8 passed)
31 steps (1 failed, 2 skipped, 28 passed)
```
```
Failures:

  1) rack object api editing should be possible to add a port
     Failure/Error: resp = mock_patch('/object/2', 'ports' => {'_push' => {'name' => 'foo', 'type' => '1000Base-T'} } )
     Logistician::HTTPError::Class:
       Bad query: {"type"=>"1000Base-T"}
     # ./lib/logistician/sequel/repository.rb:290:in `create'
     # ./lib/logistician/sequel/repository.rb:111:in `block (3 levels) in publish'
     # ./lib/logistician/sequel/write.rb:149:in `call'
     # ./lib/logistician/sequel/write.rb:149:in `block in apply_to!'
     # ./lib/logistician/sequel/write.rb:147:in `each'
     # ./lib/logistician/sequel/write.rb:147:in `apply_to!'
     # ./lib/logistician/sequel/update.rb:39:in `block in do_foreign!'
     # ./lib/logistician/sequel/update.rb:38:in `do_foreign!'
     # ./lib/logistician/sequel/update.rb:21:in `do!'
     # ./lib/logistician/repository/single_resource.rb:34:in `block in patch'
     # ./lib/logistician/repository/single_resource.rb:32:in `patch'
     # ./lib/logistician/resource.rb:49:in `call'
     # ./lib/logistician/repository/shared.rb:61:in `block in call'
     # ./lib/logistician/context.rb:54:in `use'
     # ./lib/logistician/repository/shared.rb:57:in `call'
     # (eval):7:in `each'
     # ./lib/logistician/context.rb:37:in `call'
     # ./lib/logistician/context.rb:37:in `call'
     # ./spec/helper/object_router.rb:55:in `mock_request'
     # ./spec/helper/object_router.rb:65:in `mock_patch'
     # ./spec/api/rack_object_spec.rb:360:in `block (3 levels) in <top (required)>'
     # ./spec/helper.rb:20:in `block (2 levels) in <top (required)>'

  2) rack object api editing should be possible to add mulitple ports
     Failure/Error: resp = mock_patch('/object/2', 'ports' => {'_push' => [ {'name' => 'foo', 'type' => '1000Base-T'}, {'name' => 'bar', 'type' => '1000Base-T'} ] } )
     Logistician::HTTPError::Class:
       Bad query: {"type"=>"1000Base-T"}
     # ./lib/logistician/sequel/repository.rb:290:in `create'
     # ./lib/logistician/sequel/repository.rb:105:in `block (4 levels) in publish'
     # ./lib/logistician/sequel/repository.rb:105:in `each'
     # ./lib/logistician/sequel/repository.rb:105:in `block (3 levels) in publish'
     # ./lib/logistician/sequel/write.rb:149:in `call'
     # ./lib/logistician/sequel/write.rb:149:in `block in apply_to!'
     # ./lib/logistician/sequel/write.rb:147:in `each'
     # ./lib/logistician/sequel/write.rb:147:in `apply_to!'
     # ./lib/logistician/sequel/update.rb:39:in `block in do_foreign!'
     # ./lib/logistician/sequel/update.rb:38:in `do_foreign!'
     # ./lib/logistician/sequel/update.rb:21:in `do!'
     # ./lib/logistician/repository/single_resource.rb:34:in `block in patch'
     # ./lib/logistician/repository/single_resource.rb:32:in `patch'
     # ./lib/logistician/resource.rb:49:in `call'
     # ./lib/logistician/repository/shared.rb:61:in `block in call'
     # ./lib/logistician/context.rb:54:in `use'
     # ./lib/logistician/repository/shared.rb:57:in `call'
     # (eval):7:in `each'
     # ./lib/logistician/context.rb:37:in `call'
     # ./lib/logistician/context.rb:37:in `call'
     # ./spec/helper/object_router.rb:55:in `mock_request'
     # ./spec/helper/object_router.rb:65:in `mock_patch'
     # ./spec/api/rack_object_spec.rb:372:in `block (3 levels) in <top (required)>'
     # ./spec/helper.rb:20:in `block (2 levels) in <top (required)>'

  3) rack object api editing should be possible to remove a port
     Failure/Error: mock_patch('/object/2', 'ports' => {'_push' => [ {'name' => 'foo', 'type' => '1000Base-T'}, {'name' => 'bar', 'type' => '1000Base-T'} ] } )
     Logistician::HTTPError::Class:
       Bad query: {"type"=>"1000Base-T"}
     # ./lib/logistician/sequel/repository.rb:290:in `create'
     # ./lib/logistician/sequel/repository.rb:105:in `block (4 levels) in publish'
     # ./lib/logistician/sequel/repository.rb:105:in `each'
     # ./lib/logistician/sequel/repository.rb:105:in `block (3 levels) in publish'
     # ./lib/logistician/sequel/write.rb:149:in `call'
     # ./lib/logistician/sequel/write.rb:149:in `block in apply_to!'
     # ./lib/logistician/sequel/write.rb:147:in `each'
     # ./lib/logistician/sequel/write.rb:147:in `apply_to!'
     # ./lib/logistician/sequel/update.rb:39:in `block in do_foreign!'
     # ./lib/logistician/sequel/update.rb:38:in `do_foreign!'
     # ./lib/logistician/sequel/update.rb:21:in `do!'
     # ./lib/logistician/repository/single_resource.rb:34:in `block in patch'
     # ./lib/logistician/repository/single_resource.rb:32:in `patch'
     # ./lib/logistician/resource.rb:49:in `call'
     # ./lib/logistician/repository/shared.rb:61:in `block in call'
     # ./lib/logistician/context.rb:54:in `use'
     # ./lib/logistician/repository/shared.rb:57:in `call'
     # (eval):7:in `each'
     # ./lib/logistician/context.rb:37:in `call'
     # ./lib/logistician/context.rb:37:in `call'
     # ./spec/helper/object_router.rb:55:in `mock_request'
     # ./spec/helper/object_router.rb:65:in `mock_patch'
     # ./spec/api/rack_object_spec.rb:383:in `block (3 levels) in <top (required)>'
     # ./spec/helper.rb:20:in `block (2 levels) in <top (required)>'

Finished in 3.35 seconds
40 examples, 3 failures, 3 pending
```