Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Configure physical_network when creating network"
  - Configure physical_network when creating network

    When the network_type is vlan, configuring physical_network
    and segmentation_id should be supported by snaps.

    JIRA: SNAPS-252

    Change-Id: I2d3270a82991230385fdc18889ed5c5e979672b5
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 3bcdb73..ef1a20e 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 3bcdb7388a2bdd1a4950afd6d5ca778b289e988e
+Subproject commit ef1a20eb5cee095d6f8d15fba0ae533e9e4b9730