feat: Allow disabling of default anomaly condition

[majanjua-amzn]

Background

Currently, when enabling adaptive sampling through the SamplingRateBoost field in a sampling rule the ADOT Java SDK immediately starts capturing 5XX errors as anomalies and this triggers boost behaviour in all services that have spans that match the rule. This is not always desired, so we are providing an option to turn this off per sampling rule.

The new API will have DisableDefaultAnomalyDetection set to true in this case.

Changes

• Added the new field to the API model
• Added logic to use this when in the default path
• Extracted some logic into the getEffectiveSamplingRuleApplier method such that decisions about boosting and capturing can be made without having to repeatedly find this value again for a single span
• Updated unit tests where relevant

Testing

• ./gradlew clean && ./scripts/local_patch.sh && ./gradlew build
• Manual E2E test where I set the field to true and validate no anomalies are recorded and also set it to false to ensure nothing has changed

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.