Update git submodules

Update git submodules

* Update docs/submodules/clover from branch 'master'
  - Merge "Spinnaker as a Service"
  - Spinnaker as a Service

    JIRA: CLOVER-52

    1. Add mainfest to install the spinnaker in kubernetes cluster
    2. after using mainfest to install spinnaker,
       we can interacte with the halyard daemon with its REST API
       and we can add/delete/list the dockerRegistry/kubernetes accounts.
    3. Add the cloverctl to interate with the halyard daemon

    Change-Id: I71bc5977f2d65aab88fa55f7d7a53ab75eb6a46b
    Signed-off-by: wutianwei <wutianwei1@huawei.com>