bump receptor

[delivers #82691800]

Submodule src/github.com/cloudfoundry-incubator/receptor dc94250..6ec0622:
  > handle CORS pre-flight before auth [#82691800]
  > fix delete error response [#82691800]

Signed-off-by: Ted Young <tyoung@pivotallabs.com>
bump nats

[delivers #82870274]

Submodule src/github.com/apcera/nats e17cb62..4ca550d:
  > Stop ping timer on reconnect
  > Bumped version
  > Merge pull request #41 from apcera/waitforexits
  > Bumped version for first pass client ping

Signed-off-by: Ted Young <tyoung@pivotallabs.com>
bump ifrit

Submodule src/github.com/tedsuo/ifrit fff013d..de3fd32:
  > ginkgomon: print spawned process's pid
Merge remote-tracking branch 'origin/develop' into develop
bump runtime-schema stager

Submodule src/github.com/cloudfoundry-incubator/runtime-schema e49c146..447e426:
  > Add new StopStagingRequestFromCC
Submodule src/github.com/cloudfoundry-incubator/stager 887dfde..e8f8b4b:
  > Support the stop staging request

Signed-off-by: Matthew Sykes <matthew.sykes@gmail.com>
Create final release 0.612 for build 366