cyclades: Add field project in models

Add field `project' and initialize it to `userid' for all VMs, networks and
floating IPs. This means that all resources are assigned to the owner's base
project.

snf-cyclades-app/synnefo/db/models.py

@@ -303,6 +303,7 @@ class VirtualMachine(models.Model):
                             max_length=VIRTUAL_MACHINE_NAME_LENGTH)
     userid = models.CharField('User ID of the owner', max_length=100,
                               db_index=True, null=False)
+    project = models.CharField(max_length=255, null=True)
     backend = models.ForeignKey(Backend, null=True,
                                 related_name="virtual_machines",
                                 on_delete=models.PROTECT)
@@ -483,6 +484,7 @@ class Network(models.Model):
     name = models.CharField('Network Name', max_length=NETWORK_NAME_LENGTH)
     userid = models.CharField('User ID of the owner', max_length=128,
                               null=True, db_index=True)
+    project = models.CharField(max_length=255, null=True)
     flavor = models.CharField('Flavor', max_length=32, null=False)
     mode = models.CharField('Network Mode', max_length=16, null=True)
     link = models.CharField('Network Link', max_length=32, null=True)
@@ -727,6 +729,7 @@ class IPAddress(models.Model):
                             on_delete=models.SET_NULL)
     userid = models.CharField("UUID of the owner", max_length=128, null=False,
                               db_index=True)
+    project = models.CharField(max_length=255, null=True)
     address = models.CharField("IP Address", max_length=64, null=False)
     floating_ip = models.BooleanField("Floating IP", null=False, default=False)
     ipversion = models.IntegerField("IP Version", null=False)