Update git submodules

* Update docs/submodules/fds from branch 'master'
  - Quick fix in resource cleanup for vpp-exec

    Change-Id: Iddef4e7411ce55f2612821b221751b6031b42ac6
    Signed-off-by: juraj.linkes <jlinkes@cisco.com>

diff --git a/docs/submodules/fds b/docs/submodules/fds
index f5e75a4..dd85a6c 160000 (submodule)
--- a/docs/submodules/fds
+++ b/docs/submodules/fds
@@ -1 +1 @@
-Subproject commit f5e75a40dd663fd42645f5a334983ce519a697b6
+Subproject commit dd85a6c21cc0c092748d25f410541be4f99777e6