Dep-server does not enable configuring the endpoint

[thitch97]

Problem/Context

Every dependency handler hard-code the download URL site from which the dependency can be obtained. This makes it more difficult to create integration tests since we are not able to control the results of calls to these endpoints.

Eg:

• Curl

  dep-server/pkg/dependency/curl.go

  Line 184 in 9158c48

  return fmt.Sprintf("https://curl.se/download/archeology/curl-%s.tar.gz", release.Version)

• Rust

  dep-server/pkg/dependency/rust.go

  Line 114 in 9158c48

  return fmt.Sprintf("https://static.rust-lang.org/dist/rustc-%s-src.tar.gz", version)