Update git submodules

* Update docs/submodules/functest from branch 'stable/euphrates'
  - Switch to absolute paths in Dockerfiles

    It updates functest-smoke and functest-restapi.

    Change-Id: If4d48f8a6ead1b9b7726a9b7b7baf6b51340a926
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 5d32eda661c476d263ebb46f486168f9adf43c1f)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index a6f29f8..2348b05 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit a6f29f8d093a1a88a936c2beaecc56aeca6a3901
+Subproject commit 2348b05b28907f087a3c066084bdc570770f0a6d