Update git submodules

* Update docs/submodules/sdc/sdc-workflow-designer.git from branch 'master'
  to cdff1c49539736b0bf16c119ba158ff776a3d5c9
  - Migrate sdc-sdc-workflow-designer docs

    Merging this will create
    https://onap-sdc-sdc-workflow-designer.readthedocs.io
    This build will run in parallel
    to the current docs generation method
    until we are ready to cut over.

    Issue-ID: CIMAN-364
    Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
    Change-Id: I3f5d2ae1354045437581edac43865b7230724ec4

diff --git a/docs/submodules/sdc/sdc-workflow-designer.git b/docs/submodules/sdc/sdc-workflow-designer.git
index 2420e00..cdff1c4 160000 (submodule)
--- a/docs/submodules/sdc/sdc-workflow-designer.git
+++ b/docs/submodules/sdc/sdc-workflow-designer.git
@@ -1 +1 @@
-Subproject commit 2420e00019cbeaec0bd7d1627dd4abc0430b4bf6
+Subproject commit cdff1c49539736b0bf16c119ba158ff776a3d5c9