Update git submodules

* Update docs/submodules/vid.git from branch 'master'
  to ce4838cf3836facbe397b25440922320b421141a
  - change management return 400 handling NPE

    return 400 internal status when exception is thrown during extracting serviceInstanceId
    Issue-ID: VID-378

    Signed-off-by: Eylon Malin <eylon.malin@intl.att.com>
    Change-Id: I97f740de0a700f503d115033980f8e8366e806e7

diff --git a/docs/submodules/vid.git b/docs/submodules/vid.git
index c459c7e..ce4838c 160000 (submodule)
--- a/docs/submodules/vid.git
+++ b/docs/submodules/vid.git
@@ -1 +1 @@
-Subproject commit c459c7efeafd556333c46c65fc4fe2616d3ef532
+Subproject commit ce4838cf3836facbe397b25440922320b421141a