tests: update test-inherit-mode to pass our import checker

tests/test-inherit-mode.t

@@ -10,7 +10,9 b' just in case somebody has a strange $TMP'
   $ cd dir
 
   $ cat >printmodes.py <<EOF
-  > import os, sys
+  > from __future__ import absolute_import, print_function
+  > import os
+  > import sys
   > 
   > allnames = []
   > isdir = {}
@@ -25,12 +27,13 b' just in case somebody has a strange $TMP'
   > allnames.sort()
   > for name in allnames:
   >     suffix = name in isdir and '/' or ''
-  >     print('%05o %s%s' % (os.lstat(name).st_mode & 07777, name, suffix))
+  >     print('%05o %s%s' % (os.lstat(name).st_mode & 0o7777, name, suffix))
   > EOF
 
   $ cat >mode.py <<EOF
+  > from __future__ import absolute_import, print_function
+  > import os
   > import sys
-  > import os
   > print('%05o' % os.lstat(sys.argv[1]).st_mode)
   > EOF