Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Use git commit id for ODL"
  - Use git commit id for ODL

    stable/carbon has been removed and Functest requires the patch
    "No more Content-Type for DELETE request header" [1].

    [1] https://git.opendaylight.org/gerrit/#/c/60578/

    Change-Id: Ia3630e03e26a543ae37c36455a68763ffc8f2b12
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index fb7b815..5605ff3 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit fb7b815a1e8945512d41c3c886d5ad229da79f09
+Subproject commit 5605ff36c726d49cce33c6ca0f68f802645913bf