Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Fixed problem to vping userdata introducted by SNAPS-OO patch.

    Changed get_vm_inst() to return a domain object forgot to change the call
    in vping_userdata.py.

    JIRA: SNAPS-92

    Change-Id: I7585dcde483c39fa850e5184686f42bbf2e8f3c5
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 4252d17..9c647d5 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 4252d177e9ccb0e533b74751008d7f8d5ab57840
+Subproject commit 9c647d5ae17026e4d0b791553397d4d38acf66db