Trivial typo

Change-Id: If77c9afd493a2a91a853a3826d7465f21d81d343
use six.move.xrange replace xrange

in python3.x, there is no method named xrange(),
it has replaced by range(),which is equal to xrange()
in python2.x. so we must fix this issue.
we use six moduleto fix this issue.

Closes-Bug: #1268439
Change-Id: I7aa8fe80155710cd639721d4b3d5bd9b4219e27d
Merge "Trivial typo"
Merge "use six.move.xrange replace xrange"