chore: deflake rest of MetricsEmitterTest

[jcosentino11]

Issue #, if available:

Description of changes:

Continuation of #420, extended to the whole MetricsEmitterTest.

Previously we waited for emitMetrics to be called to signal a metric was reported, but even with #420 there is still a race between calling the API and emitMetrics (GIVEN_kernelRunningWithMetricsConfig_WHEN_subscribeToCertificateUpdate_THEN_successMetricEmitted, for example was failing unit tests when attempting to make the same change).

To ignore the race, we can capture the first (non empty) list of metrics, and wait for metric emitter to run at least another cycle and verify no extra methods are emitted. This would verify that for one API call, we get exactly one metric emit.

Why is this change necessary:

How was this change tested:

Any additional information or context required to review the change:

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

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Code Coverage Report

File	Coverage
All files	73%	✅
com.aws.greengrass.clientdevices.auth.PermissionEvaluationUtils	77%	✅
com.aws.greengrass.clientdevices.auth.CertificateManager	88%	✅
com.aws.greengrass.clientdevices.auth.ClientDevicesAuthService	79%	✅
com.aws.greengrass.clientdevices.auth.DeviceAuthClient	73%	✅
com.aws.greengrass.clientdevices.auth.certificate.ClientCertificateGenerator	95%	✅
com.aws.greengrass.clientdevices.auth.certificate.CertificateHelper	74%	✅
com.aws.greengrass.clientdevices.auth.certificate.CertificateStore	72%	✅
com.aws.greengrass.clientdevices.auth.certificate.CertificateExpiryMonitor	77%	✅
com.aws.greengrass.clientdevices.auth.certificate.ServerCertificateGenerator	93%	✅
com.aws.greengrass.clientdevices.auth.certificate.CertificateGenerator	70%	✅
com.aws.greengrass.clientdevices.auth.certificate.CertificateExpiryMonitor$CertRotationDecider	90%	✅
com.aws.greengrass.clientdevices.auth.iot.usecases.VerifyIotCertificate	94%	✅
com.aws.greengrass.clientdevices.auth.iot.usecases.VerifyThingAttachedToCertificate	89%	✅
com.aws.greengrass.clientdevices.auth.iot.usecases.CreateIoTThingSession	67%	✅
com.aws.greengrass.clientdevices.auth.iot.usecases.VerifyCertificateValidityPeriod	88%	✅
com.aws.greengrass.clientdevices.auth.certificate.infra.BackgroundCertificateRefresh	82%	✅
com.aws.greengrass.clientdevices.auth.iot.infra.ThingRegistry	92%	✅
com.aws.greengrass.clientdevices.auth.certificate.usecases.ConfigureManagedCertificateAuthority	85%	✅
com.aws.greengrass.clientdevices.auth.certificate.usecases.ConfigureCustomCertificateAuthority	83%	✅
com.aws.greengrass.clientdevices.auth.certificate.usecases.RegisterCertificateAuthorityUseCase	65%	✅
com.aws.greengrass.clientdevices.auth.configuration.MetricsConfiguration	83%	✅
com.aws.greengrass.clientdevices.auth.configuration.GroupManager	89%	✅
com.aws.greengrass.clientdevices.auth.configuration.CAConfiguration	96%	✅
com.aws.greengrass.clientdevices.auth.configuration.RuntimeConfiguration	83%	✅
com.aws.greengrass.clientdevices.auth.configuration.SecurityConfiguration	80%	✅
com.aws.greengrass.clientdevices.auth.configuration.GroupDefinition	75%	✅
com.aws.greengrass.clientdevices.auth.configuration.ExpressionVisitor	84%	✅
com.aws.greengrass.clientdevices.auth.configuration.GroupConfiguration	92%	✅
com.aws.greengrass.clientdevices.auth.api.ClientDevicesAuthServiceApi	85%	✅
com.aws.greengrass.clientdevices.auth.api.GetCertificateRequestWithGenerator	75%	✅
com.aws.greengrass.clientdevices.auth.api.UseCases	71%	✅
com.aws.greengrass.clientdevices.auth.session.attribute.WildcardSuffixAttribute	96%	✅
com.aws.greengrass.clientdevices.auth.iot.IotAuthClient$Default	56%	✅
com.aws.greengrass.clientdevices.auth.iot.Thing	85%	✅
com.aws.greengrass.clientdevices.auth.iot.Certificate	74%	✅
com.aws.greengrass.clientdevices.auth.iot.GreengrassV2DataClientFactory	18%	❌
com.aws.greengrass.clientdevices.auth.iot.CertificateRegistry	95%	✅
com.aws.greengrass.clientdevices.auth.infra.NetworkStateProvider$Default	83%	✅
com.aws.greengrass.ipc.IPCUtils	83%	✅
com.aws.greengrass.ipc.VerifyClientDeviceIdentityOperationHandler	60%	✅
com.aws.greengrass.ipc.GetClientDeviceAuthTokenOperationHandler	83%	✅
com.aws.greengrass.ipc.AuthorizeClientDeviceActionOperationHandler	79%	✅
com.aws.greengrass.ipc.SubscribeToCertificateUpdatesOperationHandler	81%	✅
com.aws.greengrass.clientdevices.auth.session.SessionConfig	92%	✅
com.aws.greengrass.clientdevices.auth.session.SessionManager	88%	✅
com.aws.greengrass.clientdevices.auth.certificate.handlers.CAConfigurationChangedHandler	93%	✅
com.aws.greengrass.clientdevices.auth.certificate.handlers.CertificateRotationHandler	96%	✅
com.aws.greengrass.clientdevices.auth.metrics.handlers.SessionCreationEventHandler	88%	✅
com.aws.greengrass.clientdevices.auth.metrics.handlers.MetricsConfigurationChangedHandler	70%	✅
com.aws.greengrass.clientdevices.auth.metrics.handlers.AuthorizeClientDeviceActionsMetricHandler	88%	✅
com.aws.greengrass.clientdevices.auth.metrics.handlers.VerifyClientDeviceIdentityEventHandler	88%	✅
com.aws.greengrass.clientdevices.auth.metrics.handlers.CertificateSubscriptionEventHandler	83%	✅
com.aws.greengrass.clientdevices.auth.util.ResizableLinkedBlockingQueue	90%	✅
com.aws.greengrass.clientdevices.auth.util.ParseIPAddress	90%	✅
com.aws.greengrass.clientdevices.auth.connectivity.CISShadowMonitor$SucceedOnceOperation	88%	✅
com.aws.greengrass.clientdevices.auth.connectivity.CISShadowMonitor	79%	✅
com.aws.greengrass.clientdevices.auth.connectivity.CISShadowMonitor$ProcessCISShadowTask	76%	✅
com.aws.greengrass.clientdevices.auth.connectivity.CISShadowMonitor$CISShadowTaskQueue	83%	✅
com.aws.greengrass.clientdevices.auth.connectivity.HostAddress	67%	✅
com.aws.greengrass.clientdevices.auth.connectivity.CISShadowMonitor$CISShadowTaskExecutor	80%	✅
com.aws.greengrass.clientdevices.auth.configuration.parser.TokenMgrError	22%	❌
com.aws.greengrass.clientdevices.auth.configuration.parser.RuleExpressionTokenManager	61%	✅
com.aws.greengrass.clientdevices.auth.configuration.parser.ASTStart	33%	❌
com.aws.greengrass.clientdevices.auth.configuration.parser.ASTAnd	67%	✅
com.aws.greengrass.clientdevices.auth.configuration.parser.Token	58%	✅
com.aws.greengrass.clientdevices.auth.configuration.parser.RuleExpressionDefaultVisitor	0%	❌
com.aws.greengrass.clientdevices.auth.configuration.parser.ASTOr	67%	✅
com.aws.greengrass.clientdevices.auth.configuration.parser.SimpleCharStream	28%	❌
com.aws.greengrass.clientdevices.auth.configuration.parser.RuleExpressionTreeConstants	0%	❌
com.aws.greengrass.clientdevices.auth.configuration.parser.JJTRuleExpressionState	67%	✅
com.aws.greengrass.clientdevices.auth.configuration.parser.ASTThing	67%	✅
com.aws.greengrass.clientdevices.auth.configuration.parser.RuleExpression	63%	✅
com.aws.greengrass.clientdevices.auth.configuration.parser.SimpleNode	27%	❌

Minimum allowed coverage is 50%

Generated by 🐒 cobertura-action against c71327f

[github-actions]

Benchmark Results

Benchmark	Score
com.aws.greengrass.clientdevices.auth.benchmark.AuthorizationBenchmarks.GIVEN_policy_with_thing_name_variable_WHEN_auth_request_THEN_successful_auth	758292.94 ops/s
com.aws.greengrass.clientdevices.auth.benchmark.AuthorizationBenchmarks.GIVEN_single_group_permission_WHEN_simple_auth_request_THEN_successful_auth	1068751.23 ops/s