Update git submodules

Update git submodules

* Update docs/submodules/ccsdk/dashboard.git from branch 'master'
  to cea8d3ee9628be96730b8473813cbbd7ca9360dd
  - Update POM for maven dockerfile plugin push target

    This update addresses the issue for docker push.
    dockerfile-maven-plugin configuration expects the docker login
    credentials to be present in the maven settings file.
    <servers>
    <server><id>nexus3.onap.org:10003</id><username></username><password></password></server>
    </servers>

    Issue-ID: CCSDK-1011
    Change-Id: I8a700336805e997f3094d87f8e10756258fe96fa
    Signed-off-by: ramprasad kotagiri <rp5662@att.com>