Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Update tempest compute list

    For Functest Gambia, it uses tempest with the commit ID
    https://github.com/opnfv/functest/blob/stable/gambia/docker/smoke/Dockerfile#L5

    Then there is one sub test case in this compute list that needs to be updated.

    Change-Id: Ie38627853e1a69094764c72479c2b0f2dd796bbf
    Signed-off-by: xudan <xudan16@huawei.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 0361012..69db705 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 03610129690840704fdcdbf28188c695a263e46e
+Subproject commit 69db705df97f88e1078df029fa9feb3db7a7d3c1