Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - [cvp-web] Bugfix: use '_id' as the primary key of the data rather than the 'Test ID'

    JIRA: DOVETAIL-554

    It allows different users to upload the same results now.
    So the 'Test ID' is not unique in this situation.
    Use '_id' as the primary key which can uniquely identify one data.

    Change-Id: I852ee116f36a6a86e9b4350183e39ee00f8b99de
    Signed-off-by: grakiss <grakiss.wanglei@huawei.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 135db0c..f88b298 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 135db0c9860db436a2036f2bcb6f45b164f5b848
+Subproject commit f88b298c17a3dac9e6b2882d3f10f274572fc29d