Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Remove obsolote env var IS_CI_RUN"
  - Remove obsolote env var IS_CI_RUN

    Change-Id: I284e0ec97792620db08005a617f584b81a1eae63
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index fd16007..5ac93af 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit fd16007ccfb7052c3cbab82e6184be277320b83a
+Subproject commit 5ac93af8e3d7c261e75b946474652df4e5b8ecaf