This is the vote for yardstick new PTL

This is the vote for yardstick new PTL

Ross Brattain who is yardstick commtter has been nominated as
new PTL candidate before the nomination end date. As we only
have one candidate, we will use gerrit to vote instead of civs

all yardstick committers, please vote +2 or -2 before this friday
the vote will be closed at that time

Reference: https://wiki.opnfv.org/display/yardstick/Yardstick+PTL+Election

Change-Id: I561f70051ed2593581ab909f08bd8be88c5b0e77
Signed-off-by: kubi <jean.gaoliang@huawei.com>