fix: parser for azureeventhubs message without time field

[andriikushch]

PR Description

This PR is fixing the same bug described for the Loki project in:

• Logs with category "ApplicationGatewayFirewallLog" does not have proper category label in Loki loki#14176

The Azure Event Hubs messages parser ignores records that don't contain the time field.

• This change accepts such records if they contain the timeStamp field instead.
• For the parsed time, the location is set to the UTC

Which issue(s) this PR fixes

Related to:

• Logs with category "ApplicationGatewayFirewallLog" does not have proper category label in Loki loki#14176
• fix: promtail parser for azureeventhubs message without time field loki#14218

Notes to the Reviewer

PR Checklist

• CHANGELOG.md updated
• Documentation added
• Tests updated
• Config converters updated

[wildum]

lgtm, just a nit for the changelog

[wildum]

Sorry one more thing before merging: at the top of the parser file there is a comment saying that the code is copied from Loki with a ref to the version. I see that now the fix has been merged in loki, could you update the ref of the commit to match the current state in Loki please?

[andriikushch]

Sorry one more thing before merging: at the top of the parser file there is a comment saying that the code is copied from Loki with a ref to the version. I see that now the fix has been merged in loki, could you update the ref of the commit to match the current state in Loki please?

Sure 👍

I have updated a link to:

• grafana/loki@2e62abb

This commit contains the same fix and was recently merged into the Loki project.

[wildum]

Thanks!