set default for omf_friendly, move get_default_serviceclass outside of model for compaitibility with migrations
diff --git a/planetstack/core/models/slice.py b/planetstack/core/models/slice.py
index 0ecc99d..1023856 100644
--- a/planetstack/core/models/slice.py
+++ b/planetstack/core/models/slice.py
@@ -7,6 +7,7 @@
 from core.models import Role
 from core.models import Deployment
 from core.models import ServiceClass
+from core.models.serviceclass import get_default_serviceclass
 from core.models import Tag
 from django.contrib.contenttypes import generic
 from core.models import Service
@@ -18,18 +19,18 @@
 class Slice(PlCoreBase):
     name = models.CharField(unique=True, help_text="The Name of the Slice", max_length=80)
     enabled = models.BooleanField(default=True, help_text="Status for this Slice")
-    omf_friendly = models.BooleanField()
+    omf_friendly = models.BooleanField(default=False)
     description=models.TextField(blank=True,help_text="High level description of the slice and expected activities", max_length=1024)
     slice_url = models.URLField(blank=True, max_length=512)
     site = models.ForeignKey(Site, related_name='slices', help_text="The Site this Slice belongs to")
-    max_slivers = models.IntegerField(default=10) 
+    max_slivers = models.IntegerField(default=10)
     imagePreference = models.CharField(default="Ubuntu 12.04 LTS", null=True, blank=True, max_length=256)
     service = models.ForeignKey(Service, related_name='service', null=True, blank=True)
     network = models.CharField(default="Private Only",null=True, blank=True, max_length=256)
     mountDataSets = models.CharField(default="GenBank",null=True, blank=True, max_length=256)
     tags = generic.GenericRelation(Tag)
 
-    serviceClass = models.ForeignKey(ServiceClass, related_name = "slices", null=True, default=ServiceClass.get_default)
+    serviceClass = models.ForeignKey(ServiceClass, related_name = "slices", null=True, default=get_default_serviceclass)
     creator = models.ForeignKey(User, related_name='slices', blank=True, null=True)
 
     def __unicode__(self):  return u'%s' % (self.name)