Download auto-resume can't help with encrypted unbounded range requests

[tjcelaya]

Auto-resume is not compatible with unbounded range requests (e.g. Range: byte=50-).

The following line leads to us the end of the request range to Long.MAX_VALUE - hmacSize for AES/CTR and AES/CBC, and some other large value for AES/GCM.

https://github.com/joyent/java-manta/blob/27bd1fd4aba73593cef368ce80807919b89b7e1a/java-manta-client-unshaded/src/main/java/com/joyent/manta/http/EncryptionHttpHelper.java#L1118

which leads to the following check failing when we see that the user requested 0-${Long.MAX_VALUE - hmacSize} but the server responds with Content-Range 0-${content-length - 1} so we can never build a marker:

https://github.com/joyent/java-manta/blob/25c91626f49e81384e1ea64c7f58f92e17296ad9/java-manta-client-unshaded/src/main/java/com/joyent/manta/http/HttpDownloadContinuationMarker.java#L191