Fix testCloneNamedFileBlobsInUpdatedSchema

Now plone.dexterity uses the repr function to convert _p_mtime from
float to string. The str function in Python 2 rounded off _p_mtime by
generating schema names with an unexpected format. So we need to use
repr here too, so the test doesn't fail in Python 2.

plone/app/versioningbehavior/tests/test_modifiers.py

@@ -1,8 +1,6 @@
 # -*- coding: utf-8 -*-
-from five.intid import site
 from plone.app.testing import setRoles
 from plone.app.testing import TEST_USER_ID
-from plone.app.testing import TEST_USER_ROLES
 from plone.app.versioningbehavior.modifiers import CloneNamedFileBlobs
 from plone.app.versioningbehavior.modifiers import SkipRelations
 from plone.app.versioningbehavior.testing import PLONE_APP_VERSIONINGBEHAVIOR_FUNCTIONAL_TESTING
@@ -393,7 +391,7 @@ def testCloneNamedFileBlobsInUpdatedSchema(self):
         attrs_dict = modifier.getReferencedAttributes(file1)
         schema_name = portalTypeToSchemaName(
             'BlobFile',
-            suffix=str(self.portal.portal_types.BlobFile._p_mtime)
+            suffix=repr(self.portal.portal_types.BlobFile._p_mtime)
         )
         attr = "plone.dexterity.schema.generated." + schema_name + ".file"
         self.assertTrue(attr in attrs_dict)