Update git submodules

* Update docs/submodules/joid from branch 'master'
  - adding ceph support for Kubernetes.

    Change-Id: If7cf0add214da153daf39967fac15ba027cc3885
    Signed-off-by: Narinder Gupta <narinder.gupta@canonical.com>

diff --git a/docs/submodules/joid b/docs/submodules/joid
index 3fc00ff..7f23c5d 160000 (submodule)
--- a/docs/submodules/joid
+++ b/docs/submodules/joid
@@ -1 +1 @@
-Subproject commit 3fc00ffcdfe163ab1a8994cde14e4811fe7eb55e
+Subproject commit 7f23c5d78d7fac02849438d5d45f43e0f42217c4