Update git submodules

Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Delete 2 sub test cases from patrole

    These 2 test cases failed on OSP10 with reasons
    1. Provided object does not match schema 'image': u'shared'
       is not one of ['public', 'private']
    2. Provided object does not match schema 'image': u'community'
       is not one of ['public', 'private']

    'shared' and 'community' was added in the Image API v2.5

    https://developer.openstack.org/api-ref/image/v2/index.html#images

    JIRA: DOVETAIL-704

    Change-Id: Ie7ab06d5e2abe7bde25fdb7318abe341f0119bc7
    Signed-off-by: xudan <xudan16@huawei.com>