NEO: save VM system log if the stress test fails

By using '/lib/systemd/systemd-journal-remote --output=...'
the dump can be converted back to a file that is readable with
'journalctl --file=...'
13 jobs for master in 0 seconds
Status Job ID Name Coverage
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passed SlapOS.SlapRunner.ResilienceTest-Master

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failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

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passed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3

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passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

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passed SlapOS.SlapRunner.ResilienceTest-Master

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passed SlapOS.SlapRunner.ResilienceTest-Master

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failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

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failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

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passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

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passed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

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