Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Fix get_endpoint

    One specific service type has the same endpoint url if interface is admin
    or internal, while it is different from that with public interface, except
    the admin and internal endpoint url for service identity has same ip but
    different ports.

    Change-Id: I19c260222286d8b4aa3f0d3b7d273e192b13a96b
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 56ad05c..e9aefb6 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 56ad05c9ed980a5e4c71d18bb4067519ae7efa49
+Subproject commit e9aefb62e3e2942084b3845c08d3b0362271b852