Webdav props issues from litmus

[PVince81]

Running on ocis dd985d90b2dd9b4afb25cce1a8947741fe9a4e81

docker run -e LITMUS_URL="http://172.17.0.1:9140/remote.php/webdav" -e LITMUS_USERNAME="einstein" -e LITMUS_PASSWORD="relativity" -e TESTS="props" owncloud/litmus:latest   
-> running `props':
 0. init.................. pass
 1. begin................. pass
 2. propfind_invalid...... pass
 3. propfind_invalid2..... pass
 4. propfind_d0........... pass
 5. propinit.............. pass
 6. propset............... pass
 7. propget............... pass
 8. propextended.......... pass
 9. propmove.............. pass
10. propget............... pass
11. propdeletes........... FAIL (PROPPATCH on `/remote.php/webdav/litmus/prop2': http://172.17.0.1:9140/remote.php/webdav/litmus/prop2: 404 Not Found
)
12. propget............... pass
13. propreplace........... FAIL (PROPPATCH on `/remote.php/webdav/litmus/prop2': http://172.17.0.1:9140/remote.php/webdav/litmus/prop2: 404 Not Found
)
14. propget............... pass
15. propnullns............ pass
16. propget............... pass
17. propremoveset......... pass
18. propget............... pass
19. propsetremove......... pass
20. propget............... FAIL (Deleted property `{http://example.com/neon/litmus/}removeset' was still present)
21. propvalnspace......... pass
22. propwformed........... FAIL (PROPFIND on `/remote.php/webdav/litmus/prop2': 207 Multi-Status)
23. propinit.............. pass
24. propmanyns............ pass
25. propget............... pass
26. propcleanup........... pass
27. finish................ pass
<- summary for `props': of 28 tests run: 24 passed, 4 failed. 85.7%
See debug.log for network/debug traces.

[PVince81]

the first issue is related to the wrong propstat response code in PROPPATCH: #186

[PVince81]

fix for "propdeletes", "propreplace" and the "removeset" issue is here: cs3org/reva#742

[PVince81]

propwformed issue: #203

[PVince81]

• enable "props" test suite when all issues were solved

[PVince81]

seems we have further issues: https://github.com/owncloud/ocis-reva/issues/217