Update git submodules

* Update docs/submodules/bottlenecks from branch 'master'
  - Merge "bug-fix: insecure option for quota setting"
  - 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>

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index 07b5536..b252cd9 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit 07b553641c1f5991191eb4efcb238cd819f7f6a8
+Subproject commit b252cd9f78d00ba52ab79f5ff8f7b7d5abea7c7e