chore(autoscaling): add price-capacity-optimized (aws#23232)

add price-capacity-optimized to SpotAllocationStrategy enum

ref
https://docs.aws.amazon.com/ja_jp/AWSCloudFormation/latest/UserGuide/aws-properties-autoscaling-autoscalinggroup-instancesdistribution.html#cfn-autoscaling-autoscalinggroup-instancesdistribution-spotallocationstrategy


fixed aws#23226

----

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### Adding new Construct Runtime Dependencies:

* [ ] This PR adds new construct runtime dependencies following the process described [here](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md/#adding-construct-runtime-dependencies)

### New Features

* [ ] Have you added the new feature to an [integration test](https://github.com/aws/aws-cdk/blob/main/INTEGRATION_TESTS.md)?
	* [ ] Did you use `yarn integ` to deploy the infrastructure and generate the snapshot (i.e. `yarn integ` without `--dry-run`)?

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

packages/@aws-cdk/aws-autoscaling/lib/auto-scaling-group.ts

@@ -408,6 +408,13 @@ export enum SpotAllocationStrategy {
    * honors the instance type priorities on a best-effort basis but optimizes for capacity first.
    */
   CAPACITY_OPTIMIZED_PRIORITIZED = 'capacity-optimized-prioritized',
+
+  /**
+   * The price and capacity optimized allocation strategy looks at both price and
+   * capacity to select the Spot Instance pools that are the least likely to be
+   * interrupted and have the lowest possible price.
+   */
+  PRICE_CAPACITY_OPTIMIZED = 'price-capacity-optimized',
 }
 
 /**

packages/@aws-cdk/aws-autoscaling/test/auto-scaling-group.test.ts

@@ -1915,6 +1915,47 @@ test('can use Vpc imported from unparseable list tokens', () => {
   });
 });
 
+test('add price-capacity-optimized', () => {
+  // GIVEN
+  const stack = new cdk.Stack();
+
+  // WHEN
+  const lt = LaunchTemplate.fromLaunchTemplateAttributes(stack, 'imported-lt', {
+    launchTemplateId: 'test-lt-id',
+    versionNumber: '0',
+  });
+
+  new autoscaling.AutoScalingGroup(stack, 'mip-asg', {
+    mixedInstancesPolicy: {
+      launchTemplate: lt,
+      launchTemplateOverrides: [{
+        instanceType: new InstanceType('t4g.micro'),
+        launchTemplate: lt,
+        weightedCapacity: 9,
+      }],
+      instancesDistribution: {
+        onDemandAllocationStrategy: OnDemandAllocationStrategy.PRIORITIZED,
+        onDemandBaseCapacity: 1,
+        onDemandPercentageAboveBaseCapacity: 2,
+        spotAllocationStrategy: SpotAllocationStrategy.PRICE_CAPACITY_OPTIMIZED,
+        spotInstancePools: 3,
+        spotMaxPrice: '4',
+      },
+    },
+    vpc: mockVpc(stack),
+  });
+
+  // THEN
+  Template.fromStack(stack).hasResourceProperties('AWS::AutoScaling::AutoScalingGroup', {
+    MixedInstancesPolicy: {
+      InstancesDistribution: {
+        SpotAllocationStrategy: 'price-capacity-optimized',
+      },
+    },
+  });
+});
+
+
 function mockSecurityGroup(stack: cdk.Stack) {
   return ec2.SecurityGroup.fromSecurityGroupId(stack, 'MySG', 'most-secure');
 }