Update git submodules

Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Merge "Add a patch to set ha SLA to be 30 seconds"
  - Add a patch to set ha SLA to be 30 seconds

    1. According to ha test specification doc, the SLA of process recover time
       is 30 seconds.
    2. However, the SLA in Yardstick test cases are all 20 seconds.
    3. Add a patch to change the SLA in yardstick test cases.

    JIRA: DOVETAIL-496

    Change-Id: Ib8f229fdfbb3289bf70d6ee900132b3db3a21b17
    Signed-off-by: xudan <xudan16@huawei.com>