Add lun number (0) to model_update in HpSanDriver

The HpSanDriver was not setting the lun number in model_update
and as a result default value of 1 was being used.  Trouble is the
Lun number used by LeftHand is 0, so the connect info would be
wrong and fail when trying to attach the volume.

Fixes bug #1053717

Change-Id: I2391db062dff35365030e33c3eb0569fdd397949

nova/tests/volume/test_HpSanISCSIDriver.py

@@ -175,7 +175,7 @@ class HpSanISCSITestCase(test.TestCase):
     def test_create_volume(self):
         volume = {'name': self.volume_name, 'size': 1}
         model_update = self.driver.create_volume(volume)
-        expected_iqn = "iqn.2003-10.com.lefthandnetworks:group01:25366:fakev"
+        expected_iqn = "iqn.2003-10.com.lefthandnetworks:group01:25366:fakev 0"
         expected_location = "10.0.1.6:3260,1 %s" % expected_iqn
         self.assertEqual(model_update['provider_location'], expected_location)
 

nova/volume/san.py

@@ -579,9 +579,12 @@ class HpSanISCSIDriver(SanISCSIDriver):
         iscsi_portal = cluster_vip + ":3260," + cluster_interface
 
         model_update = {}
-        model_update['provider_location'] = ("%s %s" %
+
+        # NOTE(jdg): LH volumes always at lun 0 ?
+        model_update['provider_location'] = ("%s %s %s" %
                                              (iscsi_portal,
-                                              iscsi_iqn))
+                                              iscsi_iqn,
+                                              0))
 
         return model_update