ctcudd

Fix for problems identified in #307

*Issue #, if available:* [606](https://github.com/awslabs/amazon-redshift-utils/issues/606) *Description of changes:* Correct configuration for target_cluster_endpoint and target_cluster_region within the SimpleReplayUtility. This resolves the issues defined [here]([606](https://github.com/awslabs/amazon-redshift-utils/issues/606)) By submitting this pull request, I confirm...

ra3-migration-replay fails to set target endpoint and region

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Encountering multiple errors when running the ra3-migration-replay: ### 1. Replacement for `target_cluster_endpoint` is failing: ``` Error:[INFO] 2022-02-16 14:50:25 Loading config file from ./2022-02-16-13-52-33/replay_target.yaml [INFO] 2022-02-16 14:50:25 Saving SimpleReplay logs to...