Update git submodules

* Update docs/submodules/samplevnf from branch 'master'
  - Fix table issues in release notes

    Change-Id: I0c2accf7e2c1f417b9823a0dfa1f356ff7730a3d
    Signed-off-by: Deepak S <deepak.s@linux.intel.com>

diff --git a/docs/submodules/samplevnf b/docs/submodules/samplevnf
index 54b879b..06545d0 160000 (submodule)
--- a/docs/submodules/samplevnf
+++ b/docs/submodules/samplevnf
@@ -1 +1 @@
-Subproject commit 54b879bb5d76f0579c5dab68bd497f65e5d39c3d
+Subproject commit 06545d0aa74782239600dd4e3147a3163578b446