[Azure][database_account] Add missing region dimension, remove ourdated azure metrics

[tetianakravchenko]

What does this PR do?

• add Region dimension
• remove "MongoRequestsCount", "MongoRequestsInsert", "MongoRequestsDelete", "MongoRequestsQuery", "MongoRequestsUpdate" metrics - there are no such metrics according to documentation - https://learn.microsoft.com/en-us/azure/azure-monitor/reference/supported-metrics/microsoft-documentdb-databaseaccounts-metrics

FYI: used databaseaccounts metrics contain much more dimensions than I've added in this PR - https://learn.microsoft.com/en-us/azure/azure-monitor/reference/supported-metrics/microsoft-documentdb-databaseaccounts-metrics

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

Author's Checklist

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[zmoog]

Remove "MongoRequestsCount", "MongoRequestsInsert", "MongoRequestsDelete", "MongoRequestsQuery", "MongoRequestsUpdate" metrics - there are no such metrics according to documentation - https://learn.microsoft.com/en-us/azure/azure-monitor/reference/supported-metrics/microsoft-documentdb-databaseaccounts-metrics

Yeah, I also tried to search for these metrics in the Metrics section of a test MongoDB instance, I could not find these metrics.

However, I have found something similar by enabling the "classic" metrics:

The metric name is not quite the same, and we have multiple metrics for each insert/delete/query/etc operation. These metrics use a different namespace, "Microsoft.DocumentDb/databaseAccounts/classic".

Since these metrics are not available in our target namespace, I believe it's okay to remove them from the configuration.

[tetianakravchenko]

The metric name is not quite the same, and we have multiple metrics for each insert/delete/query/etc operation. These metrics use a different namespace, "Microsoft.DocumentDb/databaseAccounts/classic".

@zmoog thank you for the close review! I really missed this part. strange that I can't find Microsoft.DocumentDb/databaseAccounts/classic on the https://learn.microsoft.com/en-us/azure/azure-monitor/reference/supported-metrics/microsoft-documentdb-databaseaccounts-metrics in the list of all metrics, and it seems to be something that requires extra configuration

It would be more correct to say that those metrics were replaced: MongoRequestsCount, MongoRequestsInsert, MongoRequestsDelete, MongoRequestsQuery, MongoRequestsUpdate - > MongoRequests with CommandName dimension

note: that the possible valued for the command_name is slightly different from the MongoRequestsCount, MongoRequestsInsert, MongoRequestsDelete, MongoRequestsQuery, MongoRequestsUpdate - there are more options now:

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• Start Time: 2023-08-29T09:06:24.267+0000

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[zmoog]

strange that I can't find Microsoft.DocumentDb/databaseAccounts/classic on the https://learn.microsoft.com/en-us/azure/azure-monitor/reference/supported-metrics/microsoft-documentdb-databaseaccounts-metrics in the list of all metrics

I am not surprised, sometimes the Azure Docs are hard to navigate. There's a ton of docs, but the noise / signal ration is not great.

note: that the possible valued for the command_name is slightly different from the MongoRequestsCount, MongoRequestsInsert, MongoRequestsDelete, MongoRequestsQuery, MongoRequestsUpdate - there are more options now

This command_name dimension is a neat idea.

[elasticmachine]

Package azure_metrics - 1.0.33 containing this change is available at https://epr.elastic.co/search?package=azure_metrics