Renamed blob_store to blobstore

Also backfill test for StagingsController.store_droplet.
Remove sqlite3 build on Travis until we figure out the slowness
fix flaky death spec

there was a race between subscribing and killing the CC; if the CC was
killed first the message wouldn't be seen
Bumping the errors

Signed-off-by: Johannes Tuchscherer <jtuchscherer@pivotallabs.com>
Merge remote-tracking branch 'origin/master' into logging_service_check