Describe the bug

In Azure, there is a URL format like:

https://overturemapswestus2.blob.core.windows.net/release/path/to/file.txt

this is

https://{account_name}.blob.core.windows.net/{container_name}/{file_path}

However the container name is included in the file path in ObjectStoreScheme::parse. I'd argue this is a bug, but it's at least very confusing.

To Reproduce

#[test]
fn test_prefix() {
    let url = "https://overturemapswestus2.blob.core.windows.net/release/path/to/file.txt";
    let (scheme, path) = ObjectStoreScheme::parse(&url.parse().unwrap()).unwrap();
    assert_eq!(scheme, ObjectStoreScheme::MicrosoftAzure);
    assert_eq!(path, Path::from("path/to/file.txt"));
}

The release/ should be taken off the resulting Path in my opinion.

Expected behavior

Expected the container name to be taken off the path before returning. I.e. I expect the path to be the path inside the container.

Additional context

developmentseed/obstore#477