Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Add resiliency test caes into proposed_tests

    JIRA: DOVETAIL-474

    Add Bottlenecks resiliency test case "posca_factor_ping" into proposed_tests.

    Change-Id: I76aea651014fb4722ddae07559f417d3f840eee2
    Signed-off-by: xudan <xudan16@huawei.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 0613773..fc37fef 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 0613773ea94a9d2d4a553348b3c5363cef2dd93c
+Subproject commit fc37fef338a99254c64cc5c8cb5e1e29ec7ecdb1