Changes of docker descriptions

It looks like some descriptions have changed on the docker registry
where we had been searching for images that include 'alpine'.  We are
now seeing an image in the initial list that has 'alpine' in its
description.

Signed-off-by: Brent Baude <bbaude@redhat.com>

test/python/docker/compat/test_images.py

@@ -87,7 +87,8 @@ class TestImages(unittest.TestCase):
     def test_search_image(self):
         """Search for image"""
         for r in self.client.images.search("alpine"):
-            self.assertIn("alpine", r["Name"])
+            # registry matches if string is in either one
+            self.assertIn("alpine", r["Name"]+" "+r["Description"].lower())
 
     def test_search_bogus_image(self):
         """Search for bogus image should throw exception"""