Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - support HA test cases to run with key

    JIRA: DOVETAIL-409

    1. HA test cases need a file pod.yaml, in this file it can use the password or the key.
    2. If use key, Dovetail need to pass the key file $DOVETAIL_HOME/dovetail/userconfig/id_rsa
       to yardstick Container.
    3. Add a directory $DOVETAIL_HOME/dovetail/userconfig and a sample_pod.yaml
    4. ha.tc001 tc003 tc005 tc006 tc009 are ready.

    Change-Id: I391cc211dba2cf0740dd0dcaee8a5c2d712eaee1
    Signed-off-by: xudan <xudan16@huawei.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index b8722fa..434cfad 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit b8722fae5e61ca71a43f3d69d1d093906b140bbe
+Subproject commit 434cfad3103b8871f5eb22ceb3a2c7526b312383