Support defining period in custom metrics for target tracking policies

[carlosgaldino]

Description

Following up from #41066, this patch adds the period field to the customized_metric_specification to allow overriding the period the metric is observed.

Relations

Relates #41066

References

• https://docs.aws.amazon.com/autoscaling/ec2/APIReference/API_CustomizedMetricSpecification.html

Output from Acceptance Testing

% make testacc TESTS=TestAccAutoScalingPolicy PKG=autoscaling
...

My accounts don't support launch configuration so I can't test. It's the same reason as in the previous PR I opened before.

[github-actions]

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[ewbankkit]

LGTM 🚀.

% make testacc TESTARGS='-run=TestAccAutoScalingPolicy_' PKG=autoscaling ACCTEST_PARALLELISM=3
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.23.5 test ./internal/service/autoscaling/... -v -count 1 -parallel 3  -run=TestAccAutoScalingPolicy_ -timeout 360m -vet=off
2025/02/24 08:13:33 Initializing Terraform AWS Provider...
=== RUN   TestAccAutoScalingPolicy_basic
=== PAUSE TestAccAutoScalingPolicy_basic
=== RUN   TestAccAutoScalingPolicy_disappears
=== PAUSE TestAccAutoScalingPolicy_disappears
=== RUN   TestAccAutoScalingPolicy_predictiveScalingPredefined
=== PAUSE TestAccAutoScalingPolicy_predictiveScalingPredefined
=== RUN   TestAccAutoScalingPolicy_predictiveScalingResourceLabel
=== PAUSE TestAccAutoScalingPolicy_predictiveScalingResourceLabel
=== RUN   TestAccAutoScalingPolicy_predictiveScalingCustom
=== PAUSE TestAccAutoScalingPolicy_predictiveScalingCustom
=== RUN   TestAccAutoScalingPolicy_predictiveScalingRemoved
=== PAUSE TestAccAutoScalingPolicy_predictiveScalingRemoved
=== RUN   TestAccAutoScalingPolicy_predictiveScalingUpdated
=== PAUSE TestAccAutoScalingPolicy_predictiveScalingUpdated
=== RUN   TestAccAutoScalingPolicy_predictiveScalingFloatTargetValue
=== PAUSE TestAccAutoScalingPolicy_predictiveScalingFloatTargetValue
=== RUN   TestAccAutoScalingPolicy_simpleScalingStepAdjustment
=== PAUSE TestAccAutoScalingPolicy_simpleScalingStepAdjustment
=== RUN   TestAccAutoScalingPolicy_TargetTrack_predefined
=== PAUSE TestAccAutoScalingPolicy_TargetTrack_predefined
=== RUN   TestAccAutoScalingPolicy_TargetTrack_custom
=== PAUSE TestAccAutoScalingPolicy_TargetTrack_custom
=== RUN   TestAccAutoScalingPolicy_TargetTrack_metricMath
=== PAUSE TestAccAutoScalingPolicy_TargetTrack_metricMath
=== RUN   TestAccAutoScalingPolicy_zeroValue
=== PAUSE TestAccAutoScalingPolicy_zeroValue
=== CONT  TestAccAutoScalingPolicy_basic
=== CONT  TestAccAutoScalingPolicy_predictiveScalingFloatTargetValue
=== CONT  TestAccAutoScalingPolicy_TargetTrack_custom
--- PASS: TestAccAutoScalingPolicy_TargetTrack_custom (58.26s)
=== CONT  TestAccAutoScalingPolicy_zeroValue
--- PASS: TestAccAutoScalingPolicy_predictiveScalingFloatTargetValue (71.05s)
=== CONT  TestAccAutoScalingPolicy_TargetTrack_metricMath
--- PASS: TestAccAutoScalingPolicy_zeroValue (72.09s)
=== CONT  TestAccAutoScalingPolicy_predictiveScalingCustom
--- PASS: TestAccAutoScalingPolicy_basic (133.51s)
=== CONT  TestAccAutoScalingPolicy_predictiveScalingUpdated
--- PASS: TestAccAutoScalingPolicy_TargetTrack_metricMath (92.53s)
=== CONT  TestAccAutoScalingPolicy_predictiveScalingRemoved
--- PASS: TestAccAutoScalingPolicy_predictiveScalingCustom (73.17s)
=== CONT  TestAccAutoScalingPolicy_TargetTrack_predefined
--- PASS: TestAccAutoScalingPolicy_predictiveScalingUpdated (112.35s)
=== CONT  TestAccAutoScalingPolicy_simpleScalingStepAdjustment
--- PASS: TestAccAutoScalingPolicy_predictiveScalingRemoved (94.91s)
=== CONT  TestAccAutoScalingPolicy_disappears
--- PASS: TestAccAutoScalingPolicy_TargetTrack_predefined (63.29s)
=== CONT  TestAccAutoScalingPolicy_predictiveScalingResourceLabel
--- PASS: TestAccAutoScalingPolicy_simpleScalingStepAdjustment (61.01s)
=== CONT  TestAccAutoScalingPolicy_predictiveScalingPredefined
--- PASS: TestAccAutoScalingPolicy_disappears (57.95s)
--- PASS: TestAccAutoScalingPolicy_predictiveScalingResourceLabel (64.60s)
--- PASS: TestAccAutoScalingPolicy_predictiveScalingPredefined (69.79s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/autoscaling	382.190s

[ewbankkit]

@carlosgaldino Thanks for the contribution 🎉 👏.

[github-actions]

This functionality has been released in v5.89.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!