Nominating Alex Yang <yangyang1@zte.com.cn> as committer for Daisy4NFV project.

Nominating Alex Yang <yangyang1@zte.com.cn> as committer for Daisy4NFV project.

Alex has been contributing the majority of code to Daisy4NFV since the
last season[1][2].

I have had a talk with him on IRC meeting [3] and he expressed willing to
contribute more to Daisy4NFV project and I believe he will make a great
addition to the core review team.

All Daisy4NFV committers, please vote +1 or +2 if you support this nomination [4].

This PS also propose a committer removal. Jian Yang  (yangjianyjy@chinamobile.com)
has been inactive in the project for a long time. He

- was not present in the project meetings for more than 6 months
 (see participant lists in the minutes or IRC); AND
- did not contribute any patch for the project for more than 6 months; AND
- did not participate in the email discussion of the project for more than 6 month AND
- We failed to contact him offline.

[1] http://stackalytics.com/?project_type=opnfv-group&metric=commits&release=all&module=daisy
[2] https://gerrit.opnfv.org/gerrit/#/q/owner:yangyang1%2540zte.com.cn+status:merged+project:daisy
[3] http://eavesdrop.openstack.org/meetings/daisycloud/2017/daisycloud.2017-03-24-07.58.log.html
[4] https://wiki.opnfv.org/display/DEV/Committer+Promotions

Change-Id: Ibd416d93d01c7fe769dfc0c5809baca4cdefca46
Signed-off-by: Zhijiang Hu <hu.zhijiang@zte.com.cn>