Update git submodules

* Update docs/submodules/samplevnf from branch 'master'
  - Merge "Fix crc offloads."
  - Fix crc offloads.

    When configuring a port, prox configures queue flags.
    For historitical reasons, offloads had to be disabled on
    some pmds.
    There is now an API to query the ports and gets their
    capabilities. This fix sets now the flags based on the capabilities,
    and not the driver name.

    Change-Id: Ic72d15001992f26910f653c70d31e4381fff8089
    Signed-off-by: Xavier Simonart <xavier.simonart@intel.com>

diff --git a/docs/submodules/samplevnf b/docs/submodules/samplevnf
index 52919e3..17acce6 160000 (submodule)
--- a/docs/submodules/samplevnf
+++ b/docs/submodules/samplevnf
@@ -1 +1 @@
-Subproject commit 52919e307f83c2aa945e5d12c82fa4d7189529e8
+Subproject commit 17acce6d8d07f10f42e479e7fff7a10efc9ad4ae