Bump src/github.com/petergtz/bitsgo
Bump src/github.com/petergtz/bitsgo

Bump src/github.com/petergtz/bitsgo
  Tobias Zipfel:
     Add async end-to-end test
  Peter Goetz:
     Make blobstore_integ_test more robust against transient errors

cloudfoundry-incubator/bits-service-release,cloudfoundry-incubator/bits-service-release,cloudfoundry-incubator/bits-service-release,cloudfoundry-incubator/bits-service-release