Bump src/executor, src/inigo

Bump cloudfoundry-incubator/executor:
  Onsi Fakhouri:
     Merge pull request #4 from fraenkel/removepresence ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/executor/builds/20625769 )
     bump ginkgo, should fix travis flakiness ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/executor/builds/20624552 )
     try it again, in parallel ( Travis Failed: https://travis-ci.org/cloudfoundry-incubator/executor/builds/20621794 )
     bump ginkgo and switch to serial compilation ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/executor/builds/20620442 )
  fraenkel:
     Remove maintaining presence on exit ( Travis Unknown )
Bump cloudfoundry-incubator/inigo:
  Onsi Fakhouri:
     Merge branch 'master' of https://github.com/cloudfoundry-incubator/inigo
     Merge pull request #3 from fraenkel/removepresence
     bump ginkgo
  fraenkel:
     Remove tests that assume runonce live across restarts