Update git submodules

* Update docs/submodules/samplevnf from branch 'master'
  - Merge "vFW: Remove unused pkt_type parameter from example cfg files"
  - vFW: Remove unused pkt_type parameter from example cfg files

    JIRA: SAMPLEVNF-53

    Removing the unused pkt_type parameter. The traffic_type
    is used to identify the traffic type as IPv4 or IPv6.

    Change-Id: I22654ab9f04e2d0aa9ede3a83c68398ac2c83c63
    Signed-off-by: Anand B Jyoti <anand.b.jyoti@intel.com>

diff --git a/docs/submodules/samplevnf b/docs/submodules/samplevnf
index ef07d20..08a4ae9 160000 (submodule)
--- a/docs/submodules/samplevnf
+++ b/docs/submodules/samplevnf
@@ -1 +1 @@
-Subproject commit ef07d20e9777bf0e1af54629eb390a8a5ccd0091
+Subproject commit 08a4ae9aac7375901df381dfe87645579a706dec