boottest - Add exception message to warning print and fix typo

boottest.py

@@ -82,8 +82,8 @@ class TouchManifest(object):
         try:
             response = urllib.urlopen(url)
         except IOError as e:
-            print("W: [%s] - error connecting to %s" % (
+            print("W: [%s] - error connecting to %s: %s" % (
-                    time.asctime(), self.path))
+                    time.asctime(), self.path, e))
             return success  # failure
 
         # Only [re]create the manifest file if one was successfully downloaded

tests/test_boottest.py

@@ -89,7 +89,7 @@ class TestTouchManifest(unittest.TestCase):
         self.assertEqual(1, len(manifest._manifest))
         self.assertIn('foo', manifest)
 
-    def test_fetch_excpetion(self):
+    def test_fetch_exception(self):
         _p = mock.patch('urllib.urlopen')
         mocked_urlopen = _p.start()
         self.addCleanup(_p.stop)