Update git submodules

* Update docs/submodules/container4nfv from branch 'master'
  - Merge "Istio implementation for clearwater chart"
  - Istio implementation for clearwater chart

    1. Services ports renamed.
    2. Added label 'app' inside all the deployment's yamls.
    . README.md added with configuration information.

    JIRA: CLOVER-3
    JIRA: CONTAINER-22

    Change-Id: I4c58b9ad6b5e0e598ad6a152f58c8afad084a805
    Signed-off-by: Laura Sofia Enriquez <lsofia.enriquez@gmail.com>

diff --git a/docs/submodules/container4nfv b/docs/submodules/container4nfv
index 915c353..d963990 160000 (submodule)
--- a/docs/submodules/container4nfv
+++ b/docs/submodules/container4nfv
@@ -1 +1 @@
-Subproject commit 915c35394e5991c8c53ec36eafb2dffa76a9608f
+Subproject commit d96399015d64132b24f43a7fdd376a6fb109e28a