Multiple Gateways - Implement code changes to support multiple gateways

[salonichf5]

AC
-Support multiple gateways

• update unit tests
  -- add unit tests to verify multiple gateways

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This issue is stale because it has been open 14 days with no activity. Remove stale label or comment or this will be closed in 14 days.

[github-actions]

This issue was closed because it has been stalled for 14 days with no activity.