Update git submodules

* Update docs/submodules/joid from branch 'master'
  - Merge "cleanup code"
  - cleanup code

    1. remove unused code due to juju>2 & maas>2.2 in Ubuntu16.04
    2. remove deprecated 03-maasdeploy.sh
    3. remove other unused code

    Change-Id: I20fd0e96400db1262b0df3ef2b502c8001dd5b76
    Signed-off-by: Guo Ruijing <ruijing.guo@intel.com>

diff --git a/docs/submodules/joid b/docs/submodules/joid
index 0b6cf88..cad8852 160000 (submodule)
--- a/docs/submodules/joid
+++ b/docs/submodules/joid
@@ -1 +1 @@
-Subproject commit 0b6cf885239f5612c19db205d9a827572ad73c8a
+Subproject commit cad8852bf819f51f2e9602b11d4fc8b723623006