Fix import.

hooks/glance_relations.py

@@ -6,7 +6,7 @@ from subprocess import (
     check_call,
 )
 
-from .glance_utils import (
+from glance_utils import (
     do_openstack_upgrade,
     git_install,
     migrate_database,

hooks/glance_utils.py

@@ -5,7 +5,7 @@ import shutil
 import subprocess
 from itertools import chain
 
-from .import glance_contexts
+import glance_contexts
 
 from collections import OrderedDict