Update git submodules

* Update docs/submodules/joid from branch 'master'
  - added support for install from git repository. please modify
    default_deployment_config.yaml to install from release repo
    for ocata,master etc. Also user can define their own URL and
    more information can be obtained at jujucharms.com

    Change-Id: I4943dbf68c6d980b2a2da65417b16631df768b48
    Signed-off-by: Narinder Gupta <narinder.gupta@canonical.com>

diff --git a/docs/submodules/joid b/docs/submodules/joid
index 6baf756..c21e199 160000 (submodule)
--- a/docs/submodules/joid
+++ b/docs/submodules/joid
@@ -1 +1 @@
-Subproject commit 6baf75637c2543d26e5887f3cb5903b10185e3e1
+Subproject commit c21e199a328c1d52232c213d2b243016cca46812