AJ-1797: Eliminate import-service integration from Rawls

[jladieu]

Remove import service. Once https://github.com/broadinstitute/terra-helmfile/pull/5556 is live, cWDS will effectively field 100% of import traffic and all import-service backend resources will be deactivated.

Ticket: AJ-1797

• Shut off & remove all HTTP and pubsub interactions with ImportService which has been replaced by cWDS.
• Rename ImportServiceDAO -> CwdsDAO to reflect that it now adapts only cWDS.

Related PRs:

• terra-helmfile: https://github.com/broadinstitute/terra-helmfile/pull/5538
• firecloud-orchestration: AJ-1749 Remove import-service from firecloud-orchestration firecloud-orchestration#1355

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PR checklist

• Include the JIRA issue number in the PR description and title
• Make sure Swagger is updated if API changes (N/A)
  • ...and Orchestration's Swagger too! (N/A)
• If you changed anything in model/, then you should publish a new official rawls-model and update rawls-model in Orchestration's dependencies. (N/A)
• Get two thumbsworth of PR review
• Verify all tests go green, including CI tests
• Squash commits and merge to develop (branches are automatically deleted after merging)
• Inform other teams of any substantial changes via Slack and/or email

[davidangb]

one syntax comment inline, otherwise looks good assuming it all works!

Sometime after this merges and releases, could you also remove the relevant configs from https://github.com/broadinstitute/terra-helmfile/blob/04becbb3707afe1c2b1bf31151961e3a541d4264/charts/rawls/templates/config/_conf.tpl#L182-L201 ?

As you commented in the description, I'd like to let cwds bake in prod for some days before committing this.

[jladieu]

Sometime after this merges and releases, could you also remove the relevant configs from https://github.com/broadinstitute/terra-helmfile/blob/04becbb3707afe1c2b1bf31151961e3a541d4264/charts/rawls/templates/config/_conf.tpl#L182-L201 ?

Added and linked to https://github.com/broadinstitute/terra-helmfile/pull/5538