[yugabyte] Update deployment tooling and practices

[barroco]

Following the completion of the migration of the DSS code to support Yugabyte, this issue summarizes the steps required to upgrade the deployment scripts:

1. Local multi-node yugabyte setup:
   1. [x] Document how to run yugabyte with helm on minikube. - #1154
2. Operations:
   1. [ ] Design and document the Pooling process with Yugabyte
   2. [x] Certifcate management - #1186
3. Update service manifests:
   1. [x] Helm - #1159
   2. [ ] Tanka -
4. Update infrastructure terraform modules
   1. [x] AWS - https://github.com/interuss/dss/pull/1191
   2. [x] Google Cloud - #1190
5. Optimization:
   1. [x] https://github.com/interuss/dss/issues/1199

This plan may be updated and refined over time based on the experience gathered while executing the plan.