Urls do not require a netloc (in rfc1808)

- See https://www.rfc-editor.org/rfc/rfc1808.html#section-2.1 . So, for example, gitpythonfs:// is valid and works in fsspec.
- However in bucket-based systems, the bucket name is where the netloc would be - eg s3://bucket_name.  But luckily s3fs (and probably az, gcs etc) already gives helpful error messages if no bucket name given, wrong bucket name given etc.
- As a ToDo, this rule could test only those protocols whose fsspec implementation needs netloc, rather than excluding a few protocols as is done here. But we don't know which protocols this rule was initially added for.

dlt/common/storages/configuration.py

@@ -115,11 +115,12 @@ def protocol(self) -> str:
 
     def on_resolved(self) -> None:
         url = urlparse(self.bucket_url)
-        if not url.path and not url.netloc:
-            raise ConfigurationValueError(
-                "File path or netloc missing. Field bucket_url of FilesystemClientConfiguration"
-                " must contain valid url with a path or host:password component."
-            )
+        if url.scheme not in ("gitpythonfs", "github", "git"):
+            if not url.path and not url.netloc:
+                raise ConfigurationValueError(
+                    "File path or netloc missing. Field bucket_url of FilesystemClientConfiguration"
+                    " must contain valid url with a path or host:password component."
+                )
         # this is just a path in a local file system
         if url.path == self.bucket_url:
             url = url._replace(scheme="file")