Update git submodules

* Update docs/submodules/ccsdk/cds.git from branch 'master'
  to d9034b6d720df4718b8d455949c17051ecae0558
  - Merge "Resource resolution should return a string"
  - Resource resolution should return a string

    When being called by SDNC, expected response format is a String, not
    a Json, then within SDNC we call jsonToTCtx by passing the String as
    input.
    When we receive the Json instead of a string, that function throw an
    exception because it expects a String.
    Also, SDNC marshall directly within the SLI context the Json object,
    but the path isn't the one being looked for.
    Finally, resource resolution, by its definition, as per as its model,
    should set the returned value as a string, not a json.

    Change-Id: Iffae3128507069c2546e179c17e50fb16e43f310
    Issue-ID: CCSDK-1606
    Signed-off-by: Alexis de Talhouët <adetalhouet89@gmail.com>