Fixes Bug 1031639: admin_client.py- 'Assign and Remove role to user' points to a different URI

Change-Id: Ie8b60da44dcd9eef9daf59628a376f143d53ad9e
diff --git a/tempest/services/identity/json/admin_client.py b/tempest/services/identity/json/admin_client.py
index 314814e..b5aef5f 100644
--- a/tempest/services/identity/json/admin_client.py
+++ b/tempest/services/identity/json/admin_client.py
@@ -57,28 +57,26 @@
         resp, body = self.delete('OS-KSADM/roles/%s' % str(role_id))
         return resp, body
 
-    def list_user_roles(self, user_id):
+    def list_user_roles(self, tenant_id, user_id):
         """Returns a list of roles assigned to a user for a tenant"""
-        resp, body = self.get('users/%s/roleRefs' % user_id)
+        url = '/tenants/%s/users/%s/roles' % (tenant_id, user_id)
+        resp, body = self.get(url)
         body = json.loads(body)
         return resp, body['roles']
 
-    def assign_user_role(self, user_id, role_id, tenant_id):
-        """Assigns a role to a user for a tenant"""
-        post_body = {
-                'roleId': role_id,
-                'tenantId': tenant_id
-        }
-        post_body = json.dumps({'role': post_body})
-        resp, body = self.post('users/%s/roleRefs' % user_id, post_body,
-                                self.headers)
+    def assign_user_role(self, tenant_id, user_id, role_id):
+        """Add roles to a user on a tenant"""
+        post_body = json.dumps({})
+        resp, body = self.put('/tenants/%s/users/%s/roles/OS-KSADM/%s'
+                                % (tenant_id, user_id, role_id), post_body,
+                                   self.headers)
         body = json.loads(body)
         return resp, body['role']
 
-    def remove_user_role(self, user_id, role_id):
+    def remove_user_role(self, tenant_id, user_id, role_id):
         """Removes a role assignment for a user on a tenant"""
-        resp, body = self.delete('users/%s/roleRefs/%s' % (user_id, role_id))
-        return resp, body
+        return self.delete('/tenants/%s/users/%s/roles/OS-KSADM/%s'
+               % (tenant_id, user_id, role_id))
 
     def delete_tenant(self, tenant_id):
         """Delete a tenant"""