[COST-4745] Update compute engine SKUs for networking

[cgoodfred]

The networking SKU's have changed to be consistent on wording with Data Transfer In or Data Transfer Out

Relevant GCP announcement: https://cloud.google.com/data-transfer/product-name-change-announce
SKU Verification: https://cloud.google.com/skus?hl=en&filter=Network%20VPN%20Intra%20Region%20Data%20Transfer&currency=USD

Testing:
Create a yaml that specifies a compute engine resource with any of the SKUs and see that all the values generated have the correct SKU Description.

Example generator:

  - ComputeEngineGenerator:
      start_date: last_month
      price: 20
      usage.amount_in_pricing_units: 500
      sku_id: 6B8F-E63D-832B 
      instance_type: n1-standard-4
      location.region: us-west1-a
      resource.name: projects/my_fake_project/instances/gcp_compute1
      resource.global_name: //compute.googleapis.com/projects/my_ffake_project/zones/australia-southeast1-a/instances/big_fake

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.7%. Comparing base (0b88a23) to head (326c08c).

Additional details and impacted files

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  Files         62      62           
  Lines       4677    4677           
  Branches     658     658           
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  Hits        4383    4383           
  Misses       154     154           
  Partials     140     140