Update git submodules

Update git submodules

* Update docs/submodules/joid from branch 'master'
  - Merge "Create new consolidated documentation for JOID"
  - Create new consolidated documentation for JOID

    The current documentation contains many different versions, which
    overlap and partly contradict each other. This makes it very hard for
    people with no experience with JOID to deploy it for the first time.

    This commit tries to create a new docs structure, merging information
    currently spread across different files, while at the same time updating
    the information and adding new hints based on the experience deploying
    JOID in our lab.

    The new docs structure is inspired by and tries to follow the docs
    structure used for the APEX installer.

    As a next step after finalizing this transformation, the other
    overlapping docs directories shall be removed

    Change-Id: I7075ea48565a7bd509321a532f1173cffd24cdbc
    Signed-off-by: Martin Kulhavy <martin.kulhavy@nokia.com>