Update git submodules

* Update docs/submodules/bottlenecks from branch 'stable/euphrates'
  - bug-fix: neutron quota for euphrates

    JIRA: BOTTLENECK-215

    It seems SFC is enabled defaultly in euphrates.
    So modify the quota for SFC

    Change-Id: Id8b88f03b029ca6a4c1c13098d799958601f1bb6
    Signed-off-by: Yang Yu <Gabriel.yuyang@huawei.com>
    (cherry picked from commit ad8c10df7d3a6df07a1386de172b022b5342876f)

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index e7af951..e048419 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit e7af951ea1119649f59583ab7cdaa0c9ea82c10e
+Subproject commit e048419ec62b00347c0dad3ca9330dfb66feabf5