Only require any input parameters to be specified if they differ from the defaults

[tobio]

Related to #617
Fixes#1415
Fixes#889

This PR aims to allow users to only provide streams/vars for integration policies where they differ from the defaults for a specific integration. In reality, users have been attempting to do just that, but hitting some form of inconsistent state error. These errors should no longer occur as we're taking into account the integration defaults when comparing the user config and the API derived state.

[Copilot]

Pull request overview

This PR enhances the Fleet integration policy resource to intelligently handle integration defaults, allowing users to specify only parameters that differ from defaults rather than requiring full configuration. The implementation adds a defaults attribute to track integration-specific default values and implements semantic equality comparison that considers these defaults when determining configuration drift.

Key Changes:

• Implemented default value tracking and application through a new defaults computed attribute
• Enhanced semantic equality logic to compare user configuration against defaults before detecting changes
• Removed requirement to specify all inputs/streams in configuration

Reviewed changes

Copilot reviewed 22 out of 22 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
internal/fleet/integration_policy/update.go	Fetches package info to populate defaults during update operations
internal/fleet/integration_policy/testdata/integration_kafka.json	Adds Kafka integration test data for testing default value handling
internal/fleet/integration_policy/testdata/.../update_logfile_tags_only/integration_policy.tf	Test case for partial configuration specifying only non-default values
internal/fleet/integration_policy/testdata/.../unset/integration_policy.tf	Test case for minimal configuration without explicit inputs
internal/fleet/integration_policy/testdata/.../minimal/integration_policy.tf	Test case for minimal configuration with only essential inputs
internal/fleet/integration_policy/schema_v1.go	Sets defaults to null during v1 to v2 migration
internal/fleet/integration_policy/schema.go	Adds defaults attribute and plan modifiers for state management
internal/fleet/integration_policy/resource-description.md	Updates documentation to remove recommendation to specify all inputs
internal/fleet/integration_policy/read.go	Fetches package info during read operations
internal/fleet/integration_policy/models_test.go	Updates test to pass nil package info
internal/fleet/integration_policy/models_defaults_test.go	Comprehensive tests for default value extraction and application
internal/fleet/integration_policy/models_defaults.go	Core logic for extracting defaults from package metadata
internal/fleet/integration_policy/models.go	Integrates defaults into model population and API conversion
internal/fleet/integration_policy/inputs_value_test.go	Updates tests to handle defaults in equality checks
internal/fleet/integration_policy/inputs_value.go	Implements semantic equality using defaults for inputs
internal/fleet/integration_policy/inputs_type.go	Updates type signature to use InputType
internal/fleet/integration_policy/input_value_test.go	Tests for input-level semantic equality with defaults
internal/fleet/integration_policy/input_value.go	Implements semantic equality logic for individual inputs
internal/fleet/integration_policy/input_type.go	Defines custom type supporting semantic equality for inputs
internal/fleet/integration_policy/create.go	Fetches package info during create operations
internal/fleet/integration_policy/acc_test.go	Adds acceptance tests for partial and minimal configurations
docs/resources/fleet_integration_policy.md	Updates resource documentation to reflect new behavior

[Copilot]

The streams attribute is now optional-only (no longer computed), but there's no default value specified. Consider whether a default should be added for consistency with the previous schema behavior, or document why the computed+default was intentionally removed.

Suggested change

	Optional: true,
	Optional: true,
	Default: objectdefault.StaticValue(basetypes.NewMapNull(types.ObjectType{AttrTypes: getInputStreamNestedObject(varsAreSensitive).Attributes})),

[Copilot]

The function now always returns a pointer to a map, but the previous logic conditionally set body.Inputs only when inputs were known and non-empty. This change means empty inputs {} will always be sent to the API. Verify this is the intended behavior and doesn't cause issues with the Fleet API.

Suggested change

	body.Inputs=model.toAPIInputsFromInputsAttribute(ctx, &diags)
	inputs:=model.toAPIInputsFromInputsAttribute(ctx, &diags)
	ifinputs!=nil&&len(*inputs) >0{
	body.Inputs=inputs
	}

[Copilot]

The type assertion stream.(types.Object) could panic if the element is not a types.Object. Consider adding a type check before the assertion or using the comma-ok idiom to safely handle unexpected types.

Suggested change

	for_, stream:=rangeinput.Streams.Elements(){
	streamModel:=integrationPolicyInputStreamModel{}
	d:=stream.(types.Object).As(ctx, &streamModel, basetypes.ObjectAsOptions{})
	fori, stream:=rangeinput.Streams.Elements(){
	streamModel:=integrationPolicyInputStreamModel{}
	obj, ok:=stream.(types.Object)
	if!ok{
	diags.AddError(
	fmt.Sprintf("Unexpected stream type at index %d", i),
	fmt.Sprintf("Expected types.Object, got %T", stream),
	)
	returnfalse, diags
	}
	d:=obj.As(ctx, &streamModel, basetypes.ObjectAsOptions{})