Use context.TODO for all operations
Use context.TODO for all operations

Following https://blog.golang.org/context, context should already be created in resource_handler.go (or even earlier) and be passed down to the blobstore methods to make it properly.

cloudfoundry-incubator/bits-service,cloudfoundry-incubator/bits-service,cloudfoundry-incubator/bits-service,petergtz/bitsgo,cloudfoundry-incubator/bits-service,petergtz/bitsgo,cloudfoundry-incubator/bits-service