Fix inconsistent indentation

The repo coding style is to indent at 2 characters, but there are
many places where this is not followed.

Enable pylint warning "W0311: Bad indentation" and make sure all
indentation is at multiples of 2 characters.

Change-Id: I68f0f64470789ce2429ab11104d15d380a63e6a8
diff --git a/tests/test_git_config.py b/tests/test_git_config.py
index 5b1770e..3d4b997 100644
--- a/tests/test_git_config.py
+++ b/tests/test_git_config.py
@@ -4,49 +4,49 @@
 import git_config
 
 def fixture(*paths):
-    """Return a path relative to test/fixtures.
-    """
-    return os.path.join(os.path.dirname(__file__), 'fixtures', *paths)
+  """Return a path relative to test/fixtures.
+  """
+  return os.path.join(os.path.dirname(__file__), 'fixtures', *paths)
 
 class GitConfigUnitTest(unittest.TestCase):
-    """Tests the GitConfig class.
+  """Tests the GitConfig class.
+  """
+  def setUp(self):
+    """Create a GitConfig object using the test.gitconfig fixture.
     """
-    def setUp(self):
-        """Create a GitConfig object using the test.gitconfig fixture.
-        """
-        config_fixture = fixture('test.gitconfig')
-        self.config = git_config.GitConfig(config_fixture)
+    config_fixture = fixture('test.gitconfig')
+    self.config = git_config.GitConfig(config_fixture)
 
-    def test_GetString_with_empty_config_values(self):
-        """
-        Test config entries with no value.
+  def test_GetString_with_empty_config_values(self):
+    """
+    Test config entries with no value.
 
-        [section]
-            empty
+    [section]
+        empty
 
-        """
-        val = self.config.GetString('section.empty')
-        self.assertEqual(val, None)
+    """
+    val = self.config.GetString('section.empty')
+    self.assertEqual(val, None)
 
-    def test_GetString_with_true_value(self):
-        """
-        Test config entries with a string value.
+  def test_GetString_with_true_value(self):
+    """
+    Test config entries with a string value.
 
-        [section]
-            nonempty = true
+    [section]
+        nonempty = true
 
-        """
-        val = self.config.GetString('section.nonempty')
-        self.assertEqual(val, 'true')
+    """
+    val = self.config.GetString('section.nonempty')
+    self.assertEqual(val, 'true')
 
-    def test_GetString_from_missing_file(self):
-        """
-        Test missing config file
-        """
-        config_fixture = fixture('not.present.gitconfig')
-        config = git_config.GitConfig(config_fixture)
-        val = config.GetString('empty')
-        self.assertEqual(val, None)
+  def test_GetString_from_missing_file(self):
+    """
+    Test missing config file
+    """
+    config_fixture = fixture('not.present.gitconfig')
+    config = git_config.GitConfig(config_fixture)
+    val = config.GetString('empty')
+    self.assertEqual(val, None)
 
 if __name__ == '__main__':
-    unittest.main()
+  unittest.main()