Update Rack Initializer for Netbox 2.7

The rack database model has changed in Netbox 2.7.
Therefore the initializer code, that was used before, broke.
As a user, you will need to update your racks.yml file as follows:

- Rack types must match one of the 5 rack types given, e.g.
  '4-post-cabinet'.
- Rack width must match one of the 2 rack widths given, i.e. '19' or
  '23'.

See the diff of this commit for further information how this is meant.

initializers/racks.yml

@@ -1,25 +1,41 @@
+## Possible Choices:
+##   width:
+##   - 19
+##   - 23
+##   types:
+##   - 2-post-frame
+##   - 4-post-frame
+##   - 4-post-cabinet
+##   - wall-frame
+##   - wall-cabinet
+##   outer_unit:
+##   - mm
+##   - in
+##
+## Examples:
+
 # - site: AMS 1
 #   name: rack-01
 #   role: Role 1
-#   type: 4-post cabinet
-#   width: 19 inches
+#   type: 4-post-cabinet
+#   width: 19
 #   u_height: 47
 #   custom_fields:
 #     text_field: Description
 # - site: AMS 2
 #   name: rack-02
 #   role: Role 2
-#   type: 4-post cabinet
-#   width: 19 inches
+#   type: 4-post-cabinet
+#   width: 19
 #   u_height: 47
 #   custom_fields:
 #     text_field: Description
 # - site: SING 1
 #   name: rack-03
 #   group: cage 101
 #   role: Role 3
-#   type: 4-post cabinet
-#   width: 19 inches
+#   type: 4-post-cabinet
+#   width: 19
 #   u_height: 47
 #   custom_fields:
 #     text_field: Description

startup_scripts/080_racks.py

@@ -1,7 +1,6 @@
 from dcim.models import Site, RackRole, Rack, RackGroup
 from tenancy.models import Tenant
 from extras.models import CustomField, CustomFieldValue
-from dcim.constants import RACK_TYPE_CHOICES, RACK_WIDTH_CHOICES
 from ruamel.yaml import YAML
 from pathlib import Path
 import sys
@@ -41,14 +40,6 @@
 
           params[assoc] = model.objects.get(**query)
 
-      for rack_type in RACK_TYPE_CHOICES:
-        if params['type'] in rack_type:
-          params['type'] = rack_type[0]
-
-      for rack_width in RACK_WIDTH_CHOICES:
-        if params['width'] in rack_width:
-          params['width'] = rack_width[0]
-
       rack, created = Rack.objects.get_or_create(**params)
 
       if created: