Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Merge "Use uuid1 to replace uuid4"
  - Use uuid1 to replace uuid4

    JIRA: DOVETAIL-469

    uuid1 is more unique than uuid4

    Change-Id: Ic29ec7586ba518e67cb1750df1001cd390fcf313
    Signed-off-by: xudan <xudan16@huawei.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 14e8974..7ed1cf1 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 14e89740cbd51b5f6d37d1d2139ac28c4a59ef0e
+Subproject commit 7ed1cf189676693d84c9d48bb964c178b16bae76