[outputs.cloudwatch] Telegraf reports only 10 dimensions to CloudWatch

[tory-kk]

Relevant telegraf.conf

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Logs from Telegraf

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System info

Telegraf 1.28.3+ (up to master that is 1.33.0 now)

Docker

No response

Steps to reproduce

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Expected behavior

According to CloudWatch documentation, it allows up to 30 dimensions (https://docs.aws.amazon.com.mcas.ms/AmazonCloudWatch/latest/monitoring/publishingMetrics.html#usingDimensions),

Actual behavior

CloudWatch output plugin has a hardcoded value of 10:

telegraf/plugins/outputs/cloudwatch/cloudwatch.go

Line 317 in 316f2d9

const maxDimensions = 10

Also, there is no information about tags trimming.

Additional info

No response