Limit concurrent HTTP requests when downloading binary dependencies (#4017)
Limit concurrent HTTP requests when downloading binary dependencies (#4017)

* Limit concurrent download of binary dependencies

* Add retryStrategy for downloading binary dependencies
abertelrud/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,apple/swift-package-manager