Update git submodules

* Update docs/submodules/functest from branch 'stable/euphrates'
  - Switch to OS_PROJECT_NAME

    It simply conforms with OpenStack keystone v3.

    JIRA: FUNCTEST-877

    Change-Id: I989a6eb4d8564948927c184a899b62ca763ef824
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 5c178f0d30f0701dee0d0a629023f05edfde338e)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 4108e6a..ccc0f85 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 4108e6a707b39872be8714d6e54984a93f920413
+Subproject commit ccc0f857e610c4c5417f267b767546515e0aa7ed