gg_VS-513. Remove usage of service account from GvsValidateVAT.wdl

[gbggrant]

No description provided.

[gbggrant]

'Passing' workflow at: https://app.terra.bio/#workspaces/allofus-drc-wgs-dev/AoU_DRC_WGS_12-6-21_beta_ingest/job_history/e51afc46-ef55-4c59-b4dd-6ab7d3de0ca8

Note that this workflow fails because one of the actual validations fails, so the report that is generated indicates this

[codecov]

Codecov Report

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[gbggrant]

I've run this with my pmi ops account using these parameters:
default_dataset: "beta2_99k"
query_project_id: aou-genomics-curation-prod"
vat_table_name: "vat_v3"

[mcovarr]

Works for me!

[rsasch]

I was able to run at least the first task in the workflow without a service account