* fix inconsistent behaviors with prometheus when scraping
1. address https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4959. skip job with wrong syntax in `scrape_configs` with error logs instead of exiting;
2. show error messages on vmagent /targets ui if there are wrong auth configs in `scrape_configs`, previously will print error logs and do scrape without auth header;
3. don't send requests if there are wrong auth configs in:
1. vmagent remoteWrite;
2. vmalert datasource/remoteRead/remoteWrite/notifier.
* add changelogs
* address review comments
* fix ut
* Revert "vmalert: unittest support stale datapoint (#4696)"
This reverts commit 0b44df7ec8.
* Revert "docs: specify min version and limitations for vmalert's unit tests"
This reverts commit a24541bd
Signed-off-by: hagen1778 <roman@victoriametrics.com>
* Revert "vmalert: init unit test (#4596)"
This reverts commit da60a68d
Signed-off-by: hagen1778 <roman@victoriametrics.com>
* docs: mention unittest revert in changelog
Signed-off-by: hagen1778 <roman@victoriametrics.com>
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Signed-off-by: hagen1778 <roman@victoriametrics.com>