Normalize objects file name

* change objects/server_nics to objects/server_nic
* change api/availability_zone to api/availability_zones

Change-Id: I923bc5ee78eacc92e6eb1f75cbfea9e8905b674d

mogan/api/controllers/v1/__init__.py

@@ -26,7 +26,7 @@ from wsme import types as wtypes
 from mogan.api.controllers import base
 from mogan.api.controllers import link
 from mogan.api.controllers.v1 import aggregates
-from mogan.api.controllers.v1 import availability_zone
+from mogan.api.controllers.v1 import availability_zones
 from mogan.api.controllers.v1 import flavors
 from mogan.api.controllers.v1 import keypairs
 from mogan.api.controllers.v1 import nodes
@@ -116,7 +116,7 @@ class Controller(rest.RestController):
 
     flavors = flavors.FlavorsController()
     servers = servers.ServerController()
-    availability_zones = availability_zone.AvailabilityZoneController()
+    availability_zones = availability_zones.AvailabilityZoneController()
     keypairs = keypairs.KeyPairController()
     aggregates = aggregates.AggregateController()
     nodes = nodes.NodeController()

mogan/objects/__init__.py

@@ -27,7 +27,7 @@ def register_all():
     # need to receive it via RPC.
     __import__('mogan.objects.flavor')
     __import__('mogan.objects.server')
-    __import__('mogan.objects.server_nics')
+    __import__('mogan.objects.server_nic')
     __import__('mogan.objects.server_fault')
     __import__('mogan.objects.keypair')
     __import__('mogan.objects.aggregate')