Bump src/dea_next

Bump cloudfoundry/dea_ng:
  Eric Malm:
     Merge remote-tracking branch 'origin/pr/102' ( Travis Success: https://travis-ci.org/cloudfoundry/dea_ng/builds/17580068 )
  Mike Heath:
     Fixed the spec to check for removal of the correct field of the 'droplet_uri'. ( Travis Unknown )
     Added filter to remove sensitive application attributes from logging. ( Travis Unknown )
  Kris Kelly:
     Bump vcap-common gem ( Travis Success: https://travis-ci.org/cloudfoundry/dea_ng/builds/17518906 )

Signed-off-by: Kris Kelly <kkelly@pivotallabs.com>
Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Eric Malm:
     Fix per-space legacy domain endpoint ( Travis created: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/18144605 )

Signed-off-by: Kris Kelly <kkelly@pivotallabs.com>
Add missing config options to DEA spec

Bump src/dea_next

Bump cloudfoundry/dea_ng:
  Maria Shaldibina:
     Add missing options to config ( Travis Success: https://travis-ci.org/cloudfoundry/dea_ng/builds/17430060 )
Use DEA config for staging memory limit in CC
Restart Cloud Controller and its jobs if memory limit exceeds 2450 Mb

[#64070390]
Start a configured number of workers on Cloud Controller

  * By default: 2 for local jobs, 1 for generic jobs
Bump src/collector

Bump cloudfoundry/collector:
  Maria Shaldibina:
     Bump vcap-common ( Travis Success: https://travis-ci.org/cloudfoundry/collector/builds/17519638 )
     Send CC job queue length to historians ( Travis Success: https://travis-ci.org/cloudfoundry/collector/builds/17512117 )

Signed-off-by: Kris Kelly <kkelly@pivotallabs.com>