Update git submodules

Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Update the check list of osinterop sub test cases

    Functest Gambia transfer OpenStack interop version from 2017.09 to 2018.02.
    The test cases executed by Functest has increased to 217.
    Adding the other 17 new test cases into Dovetail check list when parsing the results.

    The detailed info of all sub test cases are recorded in rally.log instead of
    tempest.log. So change the archive log to be rally.log.

    Change-Id: I1f6fa5e1ff2ec47872836a0bd0ad19531135e41c
    Signed-off-by: xudan <xudan16@huawei.com>