Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Add 3 new HA test cases into proposed_tests test suite

    Add 3 new HA test cases into proposed_tests test suite and running them on CI.
    For the current 8 HA test cases and 3 other HA test cases plans to add,
    do some adaptions for the Yardstick Euphrates release.
    1. Don't need the bugfix patch anymore.
    2. The data format has changed, and has done some adaptions.
    3. For Yardstick Euphrates, if setting OS_INSECURE=True, it needs to set
       OS_CACERT=False
    4. Test case tc011 needs a image and flavor to create the stack.

    JIRA: DOVETAIL-614
    JIRA: DOVETAIL-586

    Change-Id: I9da8c8316246b9edee0d81ad18422ae6018becaf
    Signed-off-by: xudan <xudan16@huawei.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 51a7666..10851a2 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 51a7666d0d50d0ed13c556d97aded50a3e7f30de
+Subproject commit 10851a2d74ec28368a97252fa0e21a4171a67f16