Update git submodules

* Update docs/submodules/joid from branch 'stable/danube'
  - adding new scenraio documentation and updated the current one.

    Change-Id: If5a7f2d2ffffd87cad4e4003ade01071b2ccd677
    Signed-off-by: Narinder Gupta <narinder.gupta@canonical.com>

diff --git a/docs/submodules/joid b/docs/submodules/joid
index 11bd1d0..7cedf56 160000 (submodule)
--- a/docs/submodules/joid
+++ b/docs/submodules/joid
@@ -1 +1 @@
-Subproject commit 11bd1d082324ac6bdcceb407cd101b88b41f6e21
+Subproject commit 7cedf5645ab74c069aec3d2d0332524d537ee33f