Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Remove orchestra testcases

    They are incompatible with Pike and they have to be removed without
    any deep update.

    The testcases will be re-renabled if updated before 03/16/18.

    Change-Id: Ibf656db6ba4177eae44feb41cd5d314b7408d4de
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 6468343..ab3efe7 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 646834350c6fceb385f0907902986accf0ed4274
+Subproject commit ab3efe733bcd366b87446b04ae7a5c2a30746c9a