Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Updated documentation for juju_epc tests"
  - Updated documentation for juju_epc tests

    Change-Id: If9399b7b385cb2660e76fcd42776c0dfcb4f7677
    Signed-off-by: soumaya <soumaya.nayek@rebaca.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index a69c4be..8baa1c5 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit a69c4be1d1b4c6cc5021a14e63c9f73d28490942
+Subproject commit 8baa1c55dd28bff4c23be43eeda0edc23c9400a2