Update git submodules

* Update docs/submodules/bottlenecks from branch 'master'
  - Merge "Bottlenecks committer update"
  - Bottlenecks committer update

    According to email communication with Bottlenecks committer,
    4 committers step down and 1 committer cooptation. Details will
    be sent out through email.

    Change-Id: I19acc55075d47d240659b0ec2ff19761bdb70a92
    Signed-off-by: Yang Yu <Gabriel.yuyang@huawei.com>

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index 96d315d..6edf771 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit 96d315d2fe641c375ad659426f4e8a6c85eccc6d
+Subproject commit 6edf7710c416949a9c1ad3520b6febd3a41deb60