Update git submodules

* Update docs/submodules/bottlenecks from branch 'stable/euphrates'
  - bug-fix: python mimic source method

    JIRA: BOTTLENECK-222

    Details could be referred to the above JIRA ticket

    Change-Id: I07d89ee85e18a78d060959cfac5ded82aa83ef32
    Signed-off-by: Yang Yu <Gabriel.yuyang@huawei.com>
    (cherry picked from commit 7407bfdb64115ee380b205b88b689762b3340621)

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index 5df28e1..5056e9d 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit 5df28e11b200349de3af2acf735ff0fad20283c2
+Subproject commit 5056e9d46bffebc98bef05eb12e05f25f5f7811e