Update git submodules

* Update docs/submodules/bottlenecks from branch 'stable/danube'
  - Add yardstick danube3.1 support.

    JIRA: BOTTLENECK-173

    This patch will add a result handle for Yardstick danube
    This is only for bottlenecks danube to use.
    This will change time to 2 min to wait for Yardstick result back

    Change-Id: Icbd9d89f3e3816df947eaf6f70a12c86f74a2812
    Signed-off-by: Ace Lee <liyin11@huawei.com>

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index c94d37a..e43b02b 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit c94d37af489daf7bd0dde54129ac9edc63847cd0
+Subproject commit e43b02b999e595ebeaf49c968396f12af5e5fe6e