feat: Add an ecs_alarm_description variable to be passed to an unde…

[jbonnier]

GitHub Issue: n/a

Proposed Changes

This change introduces a new variable to be passed to the ecs_alarms module and is required when using a ecs_alarms_*_period number that is not divisble by 60. The default description is using %d which crashes when the value passed is a decimal number.

• Bug fix
• Feature
• Code style update (formatting)
• Refactoring (no functional changes, no api changes)
• Build or CI related changes
• Documentation content changes
• Other, please describe:

What is the current behavior?

When specifying a ecs_alarms_cpu_utilization_high_period lower than 60, maybe whenever that number divided by 60 doesn't return an integer, the plan/apply fails with an error message similar to:

Call to function "format" failed: unsupported value for "%d" at 39: an integer is required.

What is the new behavior?

When specifying a ecs_alarms_cpu_utilization_high_period, if that number divided by 60 doesn't return an integer, the plan/apply succeeds without an error, thanks to the new default value.

Checklist

Please check that your PR fulfills the following requirements:

• Documentation has been added/updated.
• Automated tests for the changes have been added/updated.
• Commits have been squashed (if applicable).
• Updated BREAKING_CHANGES.md (if you introduced a breaking change).

Other information

n/a