Update git submodules

* Update docs/submodules/joid from branch 'stable/danube'
  - modfied to install kubectl snap and create softlink to run the
    command

    Change-Id: I3a89247eb0307ab25ce8b9106c8d26c272b46195
    Signed-off-by: Narinder Gupta <narinder.gupta@canonical.com>
    (cherry picked from commit f279ae4f3a71aa9319f0cba90cd9e437a35c1d5d)

diff --git a/docs/submodules/joid b/docs/submodules/joid
index 7cedf56..be7994a 160000 (submodule)
--- a/docs/submodules/joid
+++ b/docs/submodules/joid
@@ -1 +1 @@
-Subproject commit 7cedf5645ab74c069aec3d2d0332524d537ee33f
+Subproject commit be7994a6cc4b6b686b353e3b2e935a06850fb653