InfluxDB 2.x, Annotations. Send tags for filtering

[Amerousful]

Initial thread in the Slack - link

Old: events title="Sitespeed.io",text="${message}",tags=${influxDBTags} ${timestamp}
New:annotations,${influxDBTags} title="Sitespeed.io",text="${message}",tags=${grafanaTags} ${timestamp}

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Fixes:

1. Send annotations also as a tags (not only as field's value)
2. Rename events to annotations for appropriate naming.

1) Send annotations as a tags, because the current logic sends them as fields.
3) Represent tags with keys, in format key1=value1,key2=value2, instead of value1,value2.
3) Rename events to annotations for appropriate naming. However, it might not be a good idea to change it because it would be inconsistent with the underlying logic in others "senders".

[soulgalore]

Hi @Amerousful nice thank you. Can you test that you can get the annotations and match them like this:

[Amerousful]

Now it works. I realized that it turns out that the original tags were for Grafana. I returned it back, and now this logic writes both of them: for Grafana and for InfluxDB.

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