Update git submodules

Update git submodules

* Update docs/submodules/ccsdk/cds.git from branch 'master'
  to 2703d7ab7045089a381416d6e3b15df5f7e785ef
  - Removed all http_proxy reference from build.
    http_proxy is an environment configuration and should not be defined in
    in the build script.
    If you need to use a proxy to build docker images then add it to
    the mvn command like this :

    -Ddocker.buildArg.http_proxy=$PROXY -Ddocker.buildArg.https_proxy=$PROXY

    Also adding http_proxy in the Dockerfile directly will add the
    environment variable in the POD statically using the proxy the was
    built with at runtime.

    If a proxy is needed at runtime then the environment variables should be
    injecting using helm charts and overrides.

    Issue-ID: CCSDK-1877
    Signed-off-by: Sebastien Premont-Tendland <sebastien.premont@bell.ca>
    Change-Id: I2b99b277b594408c974cf29a5804384293776a22