Add option to specify --kind while creating policy

This commits allows user to specify the kind of policy while
creating policy through horizon

Change-Id: I1f78670afb3aa27ed58e59aba1ccd23d89125e95
Closes-Bug:#1525836

contrib/horizon/policies/forms.py

@@ -24,9 +24,17 @@ from openstack_dashboard.api import congress
 
 LOG = logging.getLogger(__name__)
 
+POLICY_KIND_CHOICES = (
+    ('nonrecursive', _('Nonrecursive')),
+    ('action', _('Action')),
+    ('database', _('Database')),
+    ('materialized', _('Materialized')),
+)
 
 class CreatePolicy(forms.SelfHandlingForm):
     name = forms.CharField(max_length=255, label=_("Policy Name"))
+    kind = forms.ChoiceField(choices=POLICY_KIND_CHOICES, label=_("Kind"),
+                             initial='nonrecursive')
     description = forms.CharField(label=_("Description"), required=False,
                                   widget=forms.Textarea(attrs={'rows': 4}))
     failure_url = 'horizon:admin:policies:index'
@@ -34,13 +42,15 @@ class CreatePolicy(forms.SelfHandlingForm):
     def handle(self, request, data):
         policy_name = data['name']
         policy_description = data.get('description')
-        LOG.info('User %s creating policy "%s" in tenant %s' %
-                 (request.user.username, policy_name,
+        policy_kind = data.pop('kind')
+        LOG.info('User %s creating policy "%s" of type %s in tenant %s' %
+                 (request.user.username, policy_name, policy_kind,
                   request.user.tenant_name))
         try:
             params = {
                 'name': policy_name,
                 'description': policy_description,
+                'kind': policy_kind,
             }
             policy = congress.policy_create(request, params)
             msg = _('Created policy "%s"') % policy_name