Expose user-facing constants

[nojnhuh]

Describe the current behavior
Currently, some constant variables that would be useful to import to other Go projects can't be because they are defined in internal packages.

e.g.

azure-service-operator/v2/internal/reconcilers/reconcile_policy.go

Lines 16 to 37 in 0eb6054

	// ReconcilePolicyAnnotation describes the reconcile policy for the resource in question.
	// A reconcile policy describes what action (if any) the operator is allowed to take when
	// reconciling the resource.
	// If no reconcile policy is specified, the default is "run"
	const ReconcilePolicyAnnotation = "serviceoperator.azure.com/reconcile-policy"
	type ReconcilePolicy string
	const (
	// ReconcilePolicyManage instructs the operator to manage the resource in question.
	// This includes issuing PUTs to update it and DELETE's to delete it from Azure if deleted in Kuberentes.
	// This is the default policy when no policy is specified.
	ReconcilePolicyManage = ReconcilePolicy("manage")
	// ReconcilePolicySkip instructs the operator to skip all reconciliation actions. This includes creating
	// the resource.
	ReconcilePolicySkip = ReconcilePolicy("skip")
	// ReconcilePolicyDetachOnDelete instructs the operator to skip deletion of resources in Azure. This allows
	// deletion of the resource in Kubernetes to go through but does not delete the underlying Azure resource.
	ReconcilePolicyDetachOnDelete = ReconcilePolicy("detach-on-delete")
	)

azure-service-operator/v2/internal/reconcilers/predicates.go

Line 18 in 0eb6054

const PerResourceSecretAnnotation = "serviceoperator.azure.com/credential-from"

azure-service-operator/v2/internal/config/vars.go

Lines 17 to 36 in 0eb6054

	const (
	// #nosec
	ClientSecretVar = "AZURE_CLIENT_SECRET"
	SubscriptionIDVar = "AZURE_SUBSCRIPTION_ID"
	TenantIDVar = "AZURE_TENANT_ID"
	ClientIDVar = "AZURE_CLIENT_ID"
	ClientCertificateVar = "AZURE_CLIENT_CERTIFICATE"
	// #nosec
	ClientCertificatePasswordVar = "AZURE_CLIENT_CERTIFICATE_PASSWORD"
	targetNamespacesVar = "AZURE_TARGET_NAMESPACES"
	operatorModeVar = "AZURE_OPERATOR_MODE"
	syncPeriodVar = "AZURE_SYNC_PERIOD"
	resourceManagerEndpointVar = "AZURE_RESOURCE_MANAGER_ENDPOINT"
	resourceManagerAudienceVar = "AZURE_RESOURCE_MANAGER_AUDIENCE"
	azureAuthorityHostVar = "AZURE_AUTHORITY_HOST"
	podNamespaceVar = "POD_NAMESPACE"
	useWorkloadIdentityAuth = "USE_WORKLOAD_IDENTITY_AUTH"
	// #nosec
	FederatedTokenFilePath = "/var/run/secrets/tokens/azure-identity"
	)

Describe the improvement
It would be helpful to projects like CAPZ if these definitions were either moved or mirrored to packages that external projects can import.

Additional context
Add any other context about the suggested improvement.

[matthchr]

Can put this into genruntime or maybe even better a common