move .stemcell_builds into stemcell_builder directory
director changes to improve consistency
fixed bug introduced by director cleanup
removed link that accidentally got committed
updated gitignore to ignore public_stemcell_config.yml
[director] Fix bug when retrieving current bosh & release revision
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  [director] Fix bug when retrieving current bosh & release revision
  updated gitignore to ignore public_stemcell_config.yml
  removed link that accidentally got committed
  fixed bug introduced by director cleanup
  director changes to improve consistency
  move .stemcell_builds into stemcell_builder directory
fixes dynamic drain deployment test
increase the progress bar refresh time to 10s for Bat test in CI
[release] Set the default blobstore port
use File in blob_utils
[release] Fix redis port in director spec
use File.open instead of File.new in blob_utils
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  use File.open instead of File.new in blob_utils
  [release] Fix redis port in director spec
  use File in blob_utils
  [release] Set the default blobstore port
  increase the progress bar refresh time to 10s for Bat test in CI
  fixes dynamic drain deployment test