update loggregator to build 298

Signed-off-by: Stephan Hagemann <stephan@pivotallabs.com>
Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  Phan Le and Sarah Chandler:
     Renamed custom buildpacks controller to buildpacks controller (custom buildpacks already means something). [#56723198] ( Travis started: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11485053 )
     Added build pack key to staging message. ( Travis finished: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11476153 )
  matthewmcnew:
     Merge pull request #88 from philwhln/master ( Travis finished: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11483395 )
  David Stevenson and Jimmy Da:
     [finishes #56742092] org-guid and space-guid are sent on v2 service provision ( Travis finished: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11481805 )
     [finishes #56091544] service deprovision should give user an error when it fails ( Travis finished: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11474196 )
  Phil Whelan:
     improve failed rspec output 'Failure/Error: expect {' ( Travis Unknown )
simplify spiff templates

spiff now supports overriding of primitive values by default
allow specifying of static IPs for runner

this is useful for testing environments, so integration tests can be
pointed statically at the runner VM
Bump src/cloud_controller_ng

Bump cloudfoundry/cloud_controller_ng:
  David Stevenson and Jimmy Da:
     Rescues 404 from service brokers for delete/unbind ( Travis Success: https://travis-ci.org/cloudfoundry/cloud_controller_ng/builds/11489695 )
Remove static_ips line from runner_z1 in job template
Use nil for static_ips for runners, postgres