Remove -M from the pip install command

dstufft suggests not using the -M command for forcing use of the mirrors
since it causes scanning all of the mirrors every time.

Change-Id: I3f6ec19f3cbbde14d7b196c19c8b490936b757bc
Use print function for python3

Change-Id: Ib7eae9eaed6831fc74b06e02bdd0ca36e2e6c569
Merge "Remove -M from the pip install command"
Merge "Use print function for python3"