Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - [web-cvp]share result by email

    JIRA: DOVETAIL-529

    It may be easier to get other people's email than his user id

    Change-Id: Ia5f9aa72d3c79bd3f5e69dad98b3f188cdaafc3d
    Signed-off-by: grakiss <grakiss.wanglei@huawei.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 4f2c619..54bc0f2 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 4f2c6191c68567e3fd7ee7e8bcb737c3194fbb2e
+Subproject commit 54bc0f28fd9b5ec6675401d6c3322b30e72e7d9c