Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Temporarily disable test_image_signing tests

    They don't pass in two different Queens deployments.
    The topic will continue upstream.

    Change-Id: I43d6b8306aee6934fa1545ec3ed8130bb9b23ee4
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
  - Remove logics about Daisy in odl

    Daisy is now setting the right env vars [1].

    [1] https://gerrit.opnfv.org/gerrit/#/c/59839/1

    Change-Id: If23c0ac0b5ab2f4f4b9515e27d845cb9c4d07ded
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 0933e72..706fa77 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 0933e7255b7a441523a110b34adf99dc063b5e06
+Subproject commit 706fa77f3f1a88e80a7f5c0599850f39ccf6f854