Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Remove call to fetch_os_creds.sh"
  - Remove call to fetch_os_creds.sh

    After [1], the openstack credentials
    are provided to Functest as a volume
    directly from CI. The same has to be
    done manually.
    Functest doesn't need the script
    fetch_os_creds.sh any longer.

    [1] https://gerrit.opnfv.org/gerrit/#/c/35199/

    Change-Id: I0883ad7b248526cfe9df3fde984345bd41869e82
    Signed-off-by: jose.lausuch <jose.lausuch@ericsson.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 5e93207..6c6b03b 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 5e9320777016b10685b7edeecfd2b6d0f1ffabbe
+Subproject commit 6c6b03b310cf60b251a52127901431f7d059e45f