Update git submodules

* Update docs/submodules/bottlenecks from branch 'master'
  - docs for k8s capcaity test

    JIRA: BOTTLENECK-245

    Change-Id: Id7a0a9bfdebea8a9655e744ce9edf3963e61a024
    Signed-off-by: Yang (Gabriel) Yu <Gabriel.yuyang@huawei.com>

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index 27d82af..bd6b34b 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit 27d82af1145673330eddbe80eb39c47d93322cbe
+Subproject commit bd6b34bd9ed2d7feaa6fd74051b14a9d8ecf446a