Update git submodules

* Update docs/submodules/samplevnf from branch 'master'
  - Merge "VNF_Catalogue Codebase"
  - VNF_Catalogue Codebase

    Catalogue of Open Source VNFs consist in helping the end users to get
    information of the VNF we can deploy on top of an OPNFV solution

    [Deepak]: Removed all swp files.

    Change-Id: Ib2ea7330e964f1b684f32aedf631accd580df968
    Signed-off-by: Kumar Rishabh <shailrishabh@gmail.com>
    Signed-off-by: Deepak S <deepak.s@linux.intel.com>

diff --git a/docs/submodules/samplevnf b/docs/submodules/samplevnf
index d923180..4eca044 160000 (submodule)
--- a/docs/submodules/samplevnf
+++ b/docs/submodules/samplevnf
@@ -1 +1 @@
-Subproject commit d923180e4af2612361dd7d4bf1627092a4d552d8
+Subproject commit 4eca0440aee462f842567d5ef8b8796c27f4dd1b