Update git submodules

* Update docs/submodules/samplevnf from branch 'master'
  - Merge "Documentation Compliance for Euphrates - Adding template"
  - Documentation Compliance for Euphrates - Adding template

    JIRA: SAMPLEVNF-57

    Change-Id: Iccbbe17fb06044af9a53d3207b0ee7679b57ce66
    Signed-off-by: Deepak S <deepak.s@linux.intel.com>

diff --git a/docs/submodules/samplevnf b/docs/submodules/samplevnf
index a0eb3c4..6e83256 160000 (submodule)
--- a/docs/submodules/samplevnf
+++ b/docs/submodules/samplevnf
@@ -1 +1 @@
-Subproject commit a0eb3c45ca8a89220caaefa43665a7a1eb6c1933
+Subproject commit 6e83256f8180f44b9e299420f16f2a9f931887ae