Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Update snaps commit id"
  - Update snaps commit id

    In order to get fix for ovs/dpdk based scenarios vs snaps_smoke suite.

    Change-Id: Ib815d96968daa13ae186e2dd6ae0a7686347bb13
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 4879a87..1928ca2 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 4879a87a066a4cd56fdcf21422e48508a05922fc
+Subproject commit 1928ca2f26d9534378abac8619421ce3e4a032c2