with user sync command error properly exit and log

[mrow4a]

When running ./occ user:sync make sure to exit on error with non-zero, plus add log to console informing on error

• add tests
• add changelog

Related: https://github.com/owncloud/enterprise/issues/4218

[codecov]

Codecov Report

Merging #37951 into master will decrease coverage by 0.00%.
The diff coverage is 59.09%.

@@             Coverage Diff              @@
##             master   #37951      +/-   ##
============================================
- Coverage     64.71%   64.71%   -0.01%     
- Complexity    19442    19445       +3     
============================================
  Files          1286     1286              
  Lines         76019    76034      +15     
  Branches       1336     1336              
============================================
+ Hits          49196    49203       +7     
- Misses        26429    26437       +8     
  Partials        394      394              

Flag	Coverage Δ	Complexity Δ
#javascript	54.06% <ø> (ø)	0.00 <ø> (ø)
#phpunit	65.88% <59.09%> (-0.01%)	19445.00 <0.00> (+3.00)	⬇️

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Impacted Files	Coverage Δ	Complexity Δ
core/Command/User/SyncBackend.php	75.57% <55.55%> (-2.26%)	41.00 <0.00> (+3.00)	⬇️
lib/private/User/SyncService.php	83.23% <75.00%> (+0.09%)	61.00 <0.00> (ø)

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[phil-davis]

Needs a rebase - https://drone.owncloud.com/owncloud/core/27168/97/18
The API acceptance test suites have been split up a few days ago. Somehow the force-push 8 hours ago was not to a current master.

[mrow4a]

@jvillafanez could you have a look after review fixes?

[jvillafanez]

Just a couple of little optional details, but approving anyway.

[micbar]

should go in 10.6

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

No Coverage information
No Duplication information