Add a summary field to alerts

[MrZammler]

Summary

Adds a summary field to alerts. This is a short text field that can be used in some places where we currently use the alert name.

The field can be enriched as with the info field, with chart labels. This brings some more information in a glance in e.g. notifications subjects and our alert list in dashboard.

As an example, the same notification will change from:

to

Because we plan to remove the family entry from alerts, we need a way to present alert specific instance information to notifications.

Test Plan

Additional Information

For users: How does this change affect me?

[sashwathn]

@hugovalente-pm : I don't see this impacting the Mobile App in anyway if it is purely enriching the Alert Information.. Once the payload includes this, the app will automatically use this - unless we set them up as a separate field.
@car12o Any comments?

[car12o]

@hugovalente-pm : I don't see this impacting the Mobile App in anyway if it is purely enriching the Alert Information.. Once the payload includes this, the app will automatically use this - unless we set them up as a separate field. @car12o Any comments?

I'm not yet fully aware of this feature but from glance I think it will be a separate field.

[hugovalente-pm]

@car12o @sashwathn yes this is a new filed, the initial list of task (to be reviewed/confirmed) is stating that netdata/netdata-cloud#130 (comment) since we are not getting rid of the previous alert name we are inrtoducing this summary field

[MrZammler]

We can think of the summary field as a prettier alert name :-)

[MrZammler]

I've added the summary field to some alerts. More can be added later (assuming we're ok with what I've added so far).

When this is merged, we then need another PR to transmit it to the cloud and then change our own and cloud backend's endpoints to provide it to the FE.

We also need to add it to other notifications besides email.

[thiagoftsm]

Hello @MrZammler ,

Please, take a look in Codacy warning https://app.codacy.com/gh/netdata/netdata/pullRequest?prid=12502044 .

Best regards!

[MrZammler]

Thanks guys, I think last commit resolved the comments.

[thiagoftsm]

PR is working as expected, LGTM!