Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Merge "Fix NoneType error when creating router"
  - Fix NoneType error when creating router

    Change-Id: Icef5f8a769b5c33da68b7da33ac8ba87132830e2
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 7f5f1b8..0e11064 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 7f5f1b87cdde0b60cda714eb656d46751b9e2548
+Subproject commit 0e11064b4b5f49ec792784d9032161cbb3b8b023