Update git submodules

* Update docs/submodules/fds from branch 'stable/fraser'
  - release notes and scenario doc updates for Fraser 6.1.0

    Change-Id: Idbd25b91c4cb27aa36e7efa4ce011f7045fc0fca
    Signed-off-by: Onong Tayeng <otayeng@cisco.com>
    (cherry picked from commit 7a27dece748d84f7f665bd7b66e3e3567ee735c3)

diff --git a/docs/submodules/fds b/docs/submodules/fds
index 6eb4ed8..3c21801 160000 (submodule)
--- a/docs/submodules/fds
+++ b/docs/submodules/fds
@@ -1 +1 @@
-Subproject commit 6eb4ed8ce9be7135ec65318b7b833f3c487498be
+Subproject commit 3c21801514b259d1d1093f6b5f4c03eca2706670