Update git submodules

Update git submodules

* Update docs/submodules/ccsdk/dashboard.git from branch 'master'
  to f4231f30d53e192e15906245a8dd0e6ef42198e1
  - Java unit test code

    This change contains the following:

    1) Added Junit classes for java unit testing and code coverage
    2) Refactored code to use Spring autowiring of service class instances
    3) Updated icons to match the available font icons library
    4) Added back ccsdk-app-os module in the parent POM

    Change-Id: I545202357eb1c8257ee29e0f5a02aa37991b2673
    Issue-ID: CCSDK-1011
    Signed-off-by: ramprasad kotagiri <rp5662@att.com>