Unify using six.moves.range rename everywhere

Mainly to improve consistency, use range() from six.moves
renames across glance.

Behaves consistently like py2 xrange() and py3 range().

Change-Id: I542fcb2a762cf4b34c30fc796854c6fcf305d798

glance_store/_drivers/vmware_datastore.py

@@ -26,6 +26,8 @@ from oslo.vmware import constants
 from oslo_config import cfg
 from oslo_utils import excutils
 from oslo_utils import units
+# NOTE(jokke): simplified transition to py3, behaves like py2 xrange
+from six.moves import range
 import six.moves.urllib.parse as urlparse
 
 import glance_store

glance_store/common/auth.py

@@ -32,6 +32,8 @@ import httplib2
 import logging
 
 from oslo.serialization import jsonutils
+# NOTE(jokke): simplified transition to py3, behaves like py2 xrange
+from six.moves import range
 import six.moves.urllib.parse as urlparse
 
 from glance_store import exceptions

tests/unit/test_filesystem_store.py

@@ -28,6 +28,8 @@ import uuid
 import fixtures
 from oslo_utils import units
 import six
+# NOTE(jokke): simplified transition to py3, behaves like py2 xrange
+from six.moves import range
 
 from glance_store._drivers.filesystem import ChunkedFile
 from glance_store._drivers.filesystem import Store

tests/unit/test_swift_store.py

@@ -28,6 +28,8 @@ from oslo_config import cfg
 from oslo_utils import units
 from oslotest import moxstubout
 import six
+# NOTE(jokke): simplified transition to py3, behaves like py2 xrange
+from six.moves import range
 import StringIO
 import swiftclient