Update git submodules

* Update docs/submodules/bottlenecks from branch 'stable/fraser'
  - bug-fix: insecure option for quota setting

    JIRA: BOTTLENECK-240

    Setting quotas will raise exception if either of insecure and
    os_cacert are not set. It is not resonable.

    Change-Id: Ie97f0580624a6d539e9c4cfe799714090a288487
    Signed-off-by: Yang (Gabriel) Yu <Gabriel.yuyang@huawei.com>
    (cherry picked from commit 2822554647c906a1bdaa0b1661cbd8416e2fd7ef)

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index 20fe17a..7c9dcaf 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit 20fe17a8b231a8de337fa379c58b9919f42cd452
+Subproject commit 7c9dcafa5f13e56a3edc8276e8cbc9cc6fd3e98c