Update git submodules

* Update docs/submodules/bottlenecks from branch 'stable/euphrates'
  - update the Euphrates docs

    JIRA: BOTTLENECK-170

    This patch is to update the euphrates docs to commandate new
    changes.

    Change-Id: I766f3e689c9093694e82995f1b0f013f316636ab
    Signed-off-by: Yang Yu <Gabriel.yuyang@huawei.com>
    (cherry picked from commit 779ae65968952732fda657b35a92b201eb36d4ea)

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index ad12c57..1737fdc 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit ad12c5707ac1191063af5cd33d54dd30ff649787
+Subproject commit 1737fdc1ef75e3955b46f3d070f2abb80f3d87f1