Update git submodules

* Update docs/submodules/bottlenecks from branch 'stable/euphrates'
  - buf-fix: sfc quota setting

    JIRA: BOTTLENECK-215

    compass master does not enable sfc, only eupurates.
    changing sfc quota will cause error for "not valide attributes"

    Change-Id: I77fab2d957d88bed6ed28c06bff9d3c2f7fb0da7
    Signed-off-by: Yang Yu <Gabriel.yuyang@huawei.com>
    (cherry picked from commit 97a77626cc17fb372a78ddfc78a66e483315b864)

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index e048419..7f3e7fd 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit e048419ec62b00347c0dad3ca9330dfb66feabf5
+Subproject commit 7f3e7fdbccafbb08acf7b04fce9269fe9a4824f3