Update git submodules

Update git submodules

* Update docs/submodules/bottlenecks from branch 'master'
  - Merge "function of generating workflow config file in server part of testing-scheduler"
  - function of generating workflow config file in server part of testing-scheduler

    JIRA BOTTLENECK-233

    A module to help generating the config files which are sent to conductor server.
    Based on these config files, conductor can start a workflow.

    Change-Id: Ibdd71be6454fe2bd2b8718da0c300827897959e0
    Signed-off-by: Zheng Qibin <QibinZheng2014@tongji.edu.cn>