GPII-3748: Add import for Istio HPAs
GPII-3748: Add import for Istio HPAs

As Istio components are created and managed by Google (via Kubernetes
add-on manager), they have to be imported to Terraform state first,
before being modified via Terraform.

mrtyler/gpii-terraform,mrtyler/gpii-terraform,mrtyler/gpii-infra,mrtyler/gpii-terraform,mrtyler/gpii-infra,mrtyler/gpii-infra,mrtyler/gpii-infra