Fix bad default for show_deleted

replace "no" (string) with False (boolean). Added a test case

Fixes LP# 1195511

Change-Id: Ib72689b11d747508850ccab8ef1d73727da2caa6

openstack/common/context.py

@@ -61,7 +61,7 @@ class RequestContext(object):
                 'request_id': self.request_id}
 
 
-def get_admin_context(show_deleted="no"):
+def get_admin_context(show_deleted=False):
     context = RequestContext(None,
                              tenant=None,
                              is_admin=True,

tests/unit/test_context.py

@@ -24,3 +24,7 @@ class ContextTest(utils.BaseTestCase):
     def test_context(self):
         ctx = context.RequestContext()
         self.assertTrue(ctx)
+
+    def test_admin_context_show_deleted_flag_default(self):
+        ctx = context.get_admin_context()
+        self.assertFalse(ctx.show_deleted)