Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Fix typos in tempest.conf

    It completes the previous change [1].

    [1] https://gerrit.opnfv.org/gerrit/#/c/62793/2

    Change-Id: Ie4c4c5cb374f2bfac6397841f8ddc2cd3b2f524b
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 11d28aa..98a4a86 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 11d28aaf2e726859b59b7511d64dc4dd4b422e1e
+Subproject commit 98a4a863935be38f63e78550ddbcf4c1299bfdf1