Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Cleanup Tempest blacklist for Euphrates

    This list hasn't been updated in Danube. The idea is
    to clean it up and allow all the test cases to be run.
    If bugs are detected in Euphrates and there is an upstream
    bug report, the affected tests can be added again here.

    Change-Id: I44c8b4e8ae78dee7f13f761b6f7f6d8c09b2d0b0
    Signed-off-by: jose.lausuch <jose.lausuch@ericsson.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index c68b71a..7d4d0a5 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit c68b71a8024359bb4754fd561c5e3c2b43613f03
+Subproject commit 7d4d0a563a920320998a1cb975ddfbaaaec14053