a http error code differnt than 404.

Edit downloader tests to account for changes

See: #40002

This includes the bridgestrap stats parser.

This will depend on the version number as future versions may
include information we would not want to expose.

Hotfix for #40006.

As the docs say, "If timely disposal of file system resources is
required, the try-with-resources construct should be used to ensure
that the stream's close method is invoked after the stream operations
are completed."

Turns out that without closing the stream, the JVM runs out of memory
pretty quickly. Doing this is not optional but mandatory.

Implements #25307.

Implements #25309.

Part of #20542.

Part of #20542.

Part of #20542.

Replace all File references with their Path equivalents, and use Files
methods wherever feasible.

Part of #20542.

The separation between BridgeSnapshotReader, BridgeDescriptorParser,
and SanitizedBridgesWriter doesn't make much sense anymore:

 - BridgeSnapshotReader only has a constructor of more than 200 lines
   of code.

 - BridgeDescriptorParser actually only determines the descriptor type
   and

 - SanitizedBridgesWriter performs parsing and obfuscation.

There are better ways to structure this code. The first step in that
direction is to remove clutter by moving the code to read bridge
snapshots to SanitizedBridgesWriter and deleting the other two
classes.

Part of #20542.