DO NOT MERGE rangelib.py: Fix the bug in monotonic check. am: 16536a53a0 am: 801dc8925f am: cb5268ef2e  -s ours
am: fb9e214b8c

* commit 'fb9e214b8c227fba93e668b824612038c816edf1':
  DO NOT MERGE rangelib.py: Fix the bug in monotonic check.

Change-Id: I2ce21c445f84df1ad062404eced42b51f038a41f