Fix inconsistent locations in some resources

[modular-magician]

Fixes: hashicorp/terraform-provider-google#8027

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Release Note Template for Downstream PRs (will be copied)

compute: fixed an issue where `google_compute_region_per_instance_config`, `google_compute_per_instance_config`, `google_compute_region_instance_group_manager` resources were not inferring the region/zone from the provider. 

Derived from GoogleCloudPlatform/magic-modules#4377