DO NOT MERGE rangelib.py: Fix the bug in monotonic check. am: 16536a53a0
am: 801dc8925f

* commit '801dc8925fcc148f438ceca751b2c14a853bece7':
  DO NOT MERGE rangelib.py: Fix the bug in monotonic check.

Change-Id: I98966afb7be0c91d4985985a5abd05fee05e0d8f