feat(itam): Populate initial organization value from user default organization for operating system creation

!11 #28

app/itam/views/operating_system.py

@@ -12,6 +12,7 @@ from itam.models.device import DeviceOperatingSystem
 from itam.models.operating_system import OperatingSystem, OperatingSystemVersion
 from itam.forms.operating_system.update import Update
 
+from settings.models.user_settings import UserSettings
 
 
 class IndexView(PermissionRequiredMixin, OrganizationPermission, generic.ListView):
@@ -104,6 +105,13 @@ class Add(PermissionRequiredMixin, OrganizationPermission, generic.CreateView):
     ]
 
 
+    def get_initial(self):
+
+        return {
+            'organization': UserSettings.objects.get(user = self.request.user).default_organization
+        }
+
+
     def get_success_url(self, **kwargs):
 
         return reverse('ITAM:Operating Systems')