Bump ccng and dea_next.

Changes to detect app's buildpack and save it in ccdb.

==========
ccng shortlog:

$> git shortlog 1c40308..5bf5ec5

CloudFoundry Services Team (1):
      Merge pull request #37 from cloudfoundry/remove-sds-client

Dennis Schmidt & Ian Baker (1):
      fix setup_yeti script, workaround for bug [#47465247]

Jesse Zhang and Phan Le (2):
      Remove reference to SDS client
      Bumped vcap-common

Kowshik Prakasam and Maria Shaldibina (1):
      Add detected_buildpack attribute to app model and REST api.
==========
dea ng shortlog:

$> git shortlog 57e4a56..ec43f13

Kowshik Prakasam and Maria Shaldibina (1):
      Report detected_buildpack in staging response
==========