Support Affinity Rule column in the Virtual Instance Resource Type

Blazar supports True and None for the affinity key in the instance
reservation from Stein release. This patch follows the change in
the blazar dashboard.

Closes-Bug: #1821168
Change-Id: Ibceef87ee717cd978e38765bde80e8294a69833d

blazar_dashboard/content/leases/forms.py

@@ -143,6 +143,20 @@ class CreateForm(forms.SelfHandlingForm):
             'data-switch-on': 'source',
             'data-source-instance': _('Root Disk (GB)')})
     )
+    affinity = forms.ChoiceField(
+        label=_("Affinity Rule"),
+        required=False,
+        choices=(
+            (None, _('None')),
+            (True, _('Affinity')),
+            (False, _('Anti-Affinity')),
+        ),
+        initial=None,
+        widget=forms.ThemableSelectWidget(attrs={
+            'class': 'switched',
+            'data-switch-on': 'source',
+            'data-source-instance': _('Affinity Rule')})
+        )
 
     # Fields for both of host and instance reservations
     resource_properties = forms.CharField(
@@ -174,7 +188,7 @@ class CreateForm(forms.SelfHandlingForm):
                     'vcpus': data['vcpus'],
                     'memory_mb': data['memory_mb'],
                     'disk_gb': data['disk_gb'],
-                    'affinity': False,
+                    'affinity': data['affinity'],
                     'resource_properties': data['resource_properties'] or ''
                 }
             ]

blazar_dashboard/content/leases/tests.py

@@ -141,6 +141,7 @@ class LeasesTests(test.TestCase):
             'vcpus': 2,
             'memory_mb': 4096,
             'disk_gb': 128,
+            'affinity': False,
             'resource_properties': '["==", "$energy", "clean"]'
         }
         lease_create.return_value = dummy_lease
@@ -159,7 +160,7 @@ class LeasesTests(test.TestCase):
                     'vcpus': 2,
                     'memory_mb': 4096,
                     'disk_gb': 128,
-                    'affinity': False,
+                    'affinity': 'False',
                     'resource_properties': '["==", "$energy", "clean"]'
                 }
             ],