Allow auth_token change without destroy and recreate

[ac-hibbert]

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Closes #15561

Release note for CHANGELOG:

Allow auth_token to be changed without destroy and recreate

Output from acceptance testing:

$ make testacc TESTARGS='-run=TestAccAWSElasticacheReplicationGroup_updateAuthToken'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./aws -v -count 1 -parallel 20 -run=TestAccAWSElasticacheReplicationGroup_updateAuthToken -timeout 120m
=== RUN   TestAccAWSElasticacheReplicationGroup_updateAuthToken
=== PAUSE TestAccAWSElasticacheReplicationGroup_updateAuthToken
=== CONT  TestAccAWSElasticacheReplicationGroup_updateAuthToken
--- PASS: TestAccAWSElasticacheReplicationGroup_updateAuthToken (766.82s)
PASS
ok  	github.com/terraform-providers/terraform-provider-aws/aws	771.292s
...

[wanismvp]

when can this be merged?

[erandacr]

does this mean if auth_token is provided, it will always try to rotate it?
As I think if a user manually rotates the token, ie

1. execute ROTATE AUTH with newToken
2. execute SET AUTH with newToken
   and updates the newToken in terraform, terraform plan should not show any changes right?
   Please correct me if I am missing anything, thanks

[YakDriver]

No. It will only update if there is a change to auth_token.

[zhelding]

Pull request #21306 has significantly refactored the AWS Provider codebase. As a result, most PRs opened prior to the refactor now have merge conflicts that must be resolved before proceeding.

Specifically, PR #21306 relocated the code for all AWS resources and data sources from a single aws directory to a large number of separate directories in internal/service, each corresponding to a particular AWS service. This separation of code has also allowed for us to simplify the names of underlying functions -- while still avoiding namespace collisions.

We recognize that many pull requests have been open for some time without yet being addressed by our maintainers. Therefore, we want to make it clear that resolving these conflicts in no way affects the prioritization of a particular pull request. Once a pull request has been prioritized for review, the necessary changes will be made by a maintainer -- either directly or in collaboration with the pull request author.

For a more complete description of this refactor, including examples of how old filepaths and function names correspond to their new counterparts: please refer to issue #20000.

For a quick guide on how to amend your pull request to resolve the merge conflicts resulting from this refactor and bring it in line with our new code patterns: please refer to our Service Package Refactor Pull Request Guide.

[YakDriver]

This looks great! 🎉

@ac-hibbert It looks like while updating to the new package structure, everything you committed was lost, even though obviously it was not. Git lost track of who was doing what. This is unusual and I apologize.

Output from acceptance tests (us-west-2):

--- PASS: TestAccElasticacheReplicationGroup_updateAuthToken (1602.93s)
--- PASS: TestAccElastiCacheReplicationGroup_clusteringAndCacheNodesCausesError (0.87s)
--- PASS: TestAccElastiCacheReplicationGroup_ClusterMode_nonClusteredParameterGroup (787.82s)
--- PASS: TestAccElastiCacheReplicationGroup_ClusterMode_singleNode (1055.43s)
--- PASS: TestAccElastiCacheReplicationGroup_disappears (886.78s)
--- PASS: TestAccElastiCacheReplicationGroup_enableAtRestEncryption (1304.12s)
--- PASS: TestAccElastiCacheReplicationGroup_enableAuthTokenTransitEncryption (1537.10s)
--- PASS: TestAccElastiCacheReplicationGroup_enableSnapshotting (1041.93s)
--- PASS: TestAccElastiCacheReplicationGroup_finalSnapshot (884.37s)
--- PASS: TestAccElastiCacheReplicationGroup_GlobalReplicationGroupID_disappears (2307.52s)
--- PASS: TestAccElastiCacheReplicationGroup_GlobalReplicationGroupIDClusterModeValidation_numNodeGroupsOnSecondary (1093.34s)
--- PASS: TestAccElastiCacheReplicationGroup_NumberCacheClusters_basic (2314.94s)
--- PASS: TestAccElastiCacheReplicationGroup_NumberCacheClusters_multiAZEnabled (1576.72s)
--- PASS: TestAccElastiCacheReplicationGroup_NumberCacheClustersFailover_autoFailoverDisabled (1347.29s)
--- PASS: TestAccElastiCacheReplicationGroup_NumberCacheClustersFailover_autoFailoverEnabled (1657.59s)
--- PASS: TestAccElastiCacheReplicationGroup_NumberCacheClustersMemberClusterDisappears_addMemberCluster (1697.13s)
--- PASS: TestAccElastiCacheReplicationGroup_NumberCacheClustersMemberClusterDisappears_noChange (2126.89s)
--- PASS: TestAccElastiCacheReplicationGroup_NumberCacheClustersMemberClusterDisappearsRemoveMemberCluster_atTargetSize (1455.72s)
--- PASS: TestAccElastiCacheReplicationGroup_NumberCacheClustersMemberClusterDisappearsRemoveMemberCluster_scaleDown (2191.62s)
--- PASS: TestAccElastiCacheReplicationGroup_tags (1398.18s)
--- PASS: TestAccElastiCacheReplicationGroup_updateMaintenanceWindow (999.30s)
--- PASS: TestAccElastiCacheReplicationGroup_updateParameterGroup (911.49s)
--- PASS: TestAccElastiCacheReplicationGroup_useCMKKMSKeyID (1669.85s)
--- PASS: TestAccElastiCacheReplicationGroup_Validation_globalReplicationGroupIdAndNodeType (733.56s)
--- PASS: TestAccElastiCacheReplicationGroup_Validation_noNodeType (9.95s)
--- PASS: TestAccElastiCacheReplicationGroup_ValidationMultiAz_noAutomaticFailover (1.83s)
--- PASS: TestAccElastiCacheReplicationGroup_vpc (716.06s)
--- PASS: TestAccElastiCacheReplicationGroupDataSource_basic (1148.47s)
--- PASS: TestAccElastiCacheReplicationGroupDataSource_nonExistent (2.24s)
--- PASS: TestAccElastiCacheReplicationGroup_GlobalReplicationGroupID_disappears (2307.52s)
--- PASS: TestAccElastiCacheReplicationGroup_NumberCacheClusters_basic (2314.94s)
--- PASS: TestAccElastiCacheReplicationGroup_ClusterMode_basic (974.75s)
--- PASS: TestAccElastiCacheReplicationGroup_multiAzInVPC (866.13s)
--- PASS: TestAccElastiCacheReplicationGroup_redisClusterInVPC2 (1064.76s)
--- PASS: TestAccElastiCacheReplicationGroup_GlobalReplicationGroupID_basic (3032.47s)
--- PASS: TestAccElastiCacheReplicationGroup_updateDescription (1711.94s)
--- PASS: TestAccElastiCacheReplicationGroup_basic (1024.37s)
--- PASS: TestAccElastiCacheReplicationGroupDataSource_clusterMode (1139.30s)
--- PASS: TestAccElastiCacheReplicationGroup_updateNodeSize (2359.04s)
--- PASS: TestAccElastiCacheReplicationGroup_GlobalReplicationGroupID_full (3453.69s)
--- PASS: TestAccElastiCacheReplicationGroup_uppercase (1312.92s)
--- PASS: TestAccElastiCacheReplicationGroupDataSource_multiAZ (1409.68s)
--- PASS: TestAccElastiCacheReplicationGroup_ClusterMode_updateReplicasPerNodeGroup (2443.13s)
--- PASS: TestAccElastiCacheReplicationGroup_ClusterModeUpdateNumNodeGroups_scaleDown (2525.23s)
--- PASS: TestAccElastiCacheReplicationGroup_ClusterModeUpdateNumNodeGroupsAndReplicasPerNodeGroup_scaleUp (2692.99s)
--- PASS: TestAccElastiCacheReplicationGroup_multiAzNotInVPC (2115.21s)
--- PASS: TestAccElastiCacheReplicationGroup_EngineVersion_update (3490.90s)
--- PASS: TestAccElastiCacheReplicationGroup_ClusterModeUpdateNumNodeGroupsAndReplicasPerNodeGroup_scaleDown (2953.20s)
--- PASS: TestAccElastiCacheReplicationGroup_ClusterModeUpdateNumNodeGroups_scaleUp (3067.93s)

[github-actions]

This functionality has been released in v3.67.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.