Update git submodules

* Update docs/submodules/vfc/nfvo/driver/vnfm/svnfm.git from branch 'master'
  to d19480a60b4337698df55f4d9c0fadbd38737811
  - Update python2 to python3

    Change-Id: I1dfd73fe4a934ed1f46d016bdb29df17dfda2a75
    Issue-ID: VFC-1429
    Signed-off-by: fujinhua <fu.jinhua@zte.com.cn>

diff --git a/docs/submodules/vfc/nfvo/driver/vnfm/svnfm.git b/docs/submodules/vfc/nfvo/driver/vnfm/svnfm.git
index 98315d3..d19480a 160000 (submodule)
--- a/docs/submodules/vfc/nfvo/driver/vnfm/svnfm.git
+++ b/docs/submodules/vfc/nfvo/driver/vnfm/svnfm.git
@@ -1 +1 @@
-Subproject commit 98315d35b20a4b035570ce86be9342526b6f3866
+Subproject commit d19480a60b4337698df55f4d9c0fadbd38737811