Update git submodules

* Update docs/submodules/functest from branch 'stable/euphrates'
  - Merge "Switch to public keystone endpoint" into stable/euphrates
  - Switch to public keystone endpoint

    It also reorders imports and removes dead code.

    Conflicts:
        functest/opnfv_tests/vnf/ims/orchestra_clearwaterims.py
        functest/opnfv_tests/vnf/ims/orchestra_openims.py

    Change-Id: I1e7bd03a4bc07df4705c9beed83a37a022ddbd52
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 01cb2b343c0de7c67a4640d4d3794d924b68c6b9)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 20b83d8..f01fdd8 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 20b83d8f38b39111269e80eb3560845886ae60c5
+Subproject commit f01fdd86ebfcd8c6c9b368968c2e3572f702b27c