Remove hardcoded scheme when creating signed URLs
Remove hardcoded scheme when creating signed URLs

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