[TUS] Return metadata headers after direct upload

[PVince81]

When uploading the full file using POST with the TUS extension
"creation-with-upload", the fileid, etag and mtime are now returned
through headers.

I've tested this using owncloud/web#3436

• TEST: upload full file returns metadata
• TEST: upload chunked file (where first chunk is sent with POST) does not return metadata

@butonic

[TheOneRing]

🥳

06-09 15:43:45:108 [ info sync.httplogger ]:	"4223e8ce-ce6c-4cfe-aec5-5965168fe054: Request: POST https://localhost:9200/remote.php/dav/files/einstein/ Header: { X-OC-Mtime: 1591690593, Content-Type: application/offset+octet-stream, Content-Length: 63636544, Upload-Length: 63636544, Upload-Offset: 0, Tus-Resumable: 1.0.0, Upload-Metadata: filename a2F0ZS0yMC4wNC4xLTg2Ny1tYWNvcy02NC1jbGFuZyBjb3B5LmRtZw==,dir Lg==,checksum U0hBMjU2IDFhYjJkNTE2YWM2MjBkZTIxZjU5MTg5NTk4M2M3NmZkZTNiYzViZWM3ZGNhYmFhM2FhYTRkYzAzMjA0NDQ5M2I=, Authorization: [redacted], User-Agent: Mozilla/5.0 (Macintosh) mirall/2.7.0git (ownCloud, osx-19.4.0 ClientArchitecture: x86_64 OsArchitecture: x86_64), Accept: */*, X-Request-ID: 4223e8ce-ce6c-4cfe-aec5-5965168fe054, } Data: [63636544 bytes of application/offset+octet-stream data]"
06-09 15:43:45:513 [ info sync.httplogger ]:	"4223e8ce-ce6c-4cfe-aec5-5965168fe054: Response: POST https://localhost:9200/remote.php/dav/files/einstein/ Header: { Access-Control-Allow-Headers: Tus-Resumable, Upload-Length, Upload-Metadata, If-Match, Access-Control-Allow-Origin: *, Access-Control-Expose-Headers: Tus-Resumable, Location, Content-Length: 0, Content-Security-Policy: default-src 'none';, Content-Type: application/x-apple-diskimage, Date: Tue, 09 Jun 2020 13:43:45 GMT, Etag: \"427de40897c6fec5b27fe287a37503b7\", Last-Modified: Tue, 09 Jun 2020 15:43:45 +0200, Location: http://localhost:9164/data/0becdc4f-9091-45a3-9905-caad6b69cfe3, Oc-Etag: \"427de40897c6fec5b27fe287a37503b7\", Oc-Fileid: MTI4NGQyMzgtYWE5Mi00MmNlLWJkYzQtMGIwMDAwMDA5MTYyOmU1NzU1ZmY0LTdhM2ItNDJmYS1iZTlmLWVkYmJhYjU0OGVlMw==, Tus-Resumable: 1.0.0, Upload-Offset: 63636544, Vary: Origin, X-Access-Token: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJhdWQiOiJyZXZhIiwiZXhwIjoxNTkxNzEzODI1LCJpYXQiOjE1OTE3MTAyMjUsImlzcyI6Imh0dHBzOi8vbG9jYWxob3N0OjkyMDAiLCJ1c2VyIjp7ImlkIjp7ImlkcCI6Imh0dHBzOi8vbG9jYWxob3N0OjkyMDAiLCJvcGFxdWVfaWQiOiJlaW5zdGVpbiJ9LCJ1c2VybmFtZSI6ImVpbnN0ZWluIiwibWFpbCI6ImVpbnN0ZWluQGV4YW1wbGUub3JnIiwiZGlzcGxheV9uYW1lIjoiRWluc3RlaW4ifX0.HLnG5ewBltjGzOjYhGPTJF7tSAtnYXhoE4R_AiOUKIc, X-Content-Type-Options: nosniff, X-Download-Options: noopen, X-Frame-Options: SAMEORIGIN, X-Permitted-Cross-Domain-Policies: none, X-Robots-Tag: none, X-Xss-Protection: 1; mode=block, } Data: []"