Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Add the function of getting endpoint

    Functest is trying to leverage SNAPS-OO library to replace some
    utility functions, in which def get_endpoint is called by testcases
    onos, odl, multisite and cloudify_ims.

    JIRA: SNAPS-78

    Change-Id: Icb2778e0337a5d4246762ac3037773b39d5d554d
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 956acc7..8d8af3c 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 956acc7da293b931c3e21e64fa0a9011f995c11c
+Subproject commit 8d8af3c360b360c982b44ba343a97cf5949c8c20