Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Update apidoc to conform with vnf module"
  - Update apidoc to conform with vnf module

    It completes [1].

    [1] https://gerrit.opnfv.org/gerrit/#/c/34467/

    Change-Id: Ia4a850b740764774b926d5cdb92c8813bc93f9e4
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index e47af47..8b67d01 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit e47af47ac514d41e4b86085a2ba7b6d664b1cdd5
+Subproject commit 8b67d01c2974909a33829b2c4664f6b6d62adaf0