Replace remaining usage of [DEFAULT] sql_connection

The previous attempt[1] was incomplete and these was still one usage
left. The deprecated alias was removed from oslo.db[2] and no longer
works.

[1] b6b9f04
[2] bf90aed0f7b19441644de2be807ec680ad86b1b1

Change-Id: Ib3b0271057578a64ae556a11224e3b366ddf89bf
(cherry picked from commit b38a567)

Author: kajinamit

glance/tests/functional/test_glance_manage.py

@@ -43,14 +43,14 @@ def setUp(self):
         utils.safe_mkdirs(conf_dir)
         self.conf_filepath = os.path.join(conf_dir, 'glance-manage.conf')
         self.db_filepath = os.path.join(self.test_dir, 'tests.sqlite')
-        self.connection = ('sql_connection = sqlite:///%s' %
+        self.connection = ('connection = sqlite:///%s' %
                            self.db_filepath)
         db_options.set_defaults(CONF, connection='sqlite:///%s' %
                                                  self.db_filepath)
 
     def _db_command(self, db_method):
         with open(self.conf_filepath, 'w') as conf_file:
-            conf_file.write('[DEFAULT]\n')
+            conf_file.write('[database]\n')
             conf_file.write(self.connection)
             conf_file.flush()
 
@@ -60,7 +60,7 @@ def _db_command(self, db_method):
 
     def _check_db(self, expected_exitcode):
         with open(self.conf_filepath, 'w') as conf_file:
-            conf_file.write('[DEFAULT]\n')
+            conf_file.write('[database]\n')
             conf_file.write(self.connection)
             conf_file.flush()