Update git submodules

* Update docs/submodules/functest from branch 'stable/euphrates'
  - Fix 1 typo in dockerslicing.md

    Change-Id: I0bb4c46d3b554cca1dfcaafbf564d9871957c346
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 55d1287585fac93d05e9da5aae8cd1f23a372f1d)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index d68315b..c8c1f6d 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit d68315b2bdd8ce3f9a7f2f238fa4a2b249990381
+Subproject commit c8c1f6d7fca36d3d5eb12c814b858d41f1f3e765