Add Multi-AZ option

[patrick-armitage]

what

• Add option to enable Multi-AZ

why

• Available in Terraform resource's parameters
• Useful, the main draw for creating read replicas as an automated failover to new AZ

references

• Terraform reference
• AWS Docs on Elasticache Multi-AZ

[siozosdr]

Could we get some traction in this PR? This is a standard option that should not be missing in this module.
Thanks

[Gowiem]

/test all

[Gowiem]

/rebuild-readme

[Gowiem]

/test all

[pbn4]

Using this version results in:

Error: Unsupported argument

  on .terraform/modules/redis_broadcast/main.tf line 91, in resource "aws_elasticache_replication_group" "default":
  91:   multi_az_enabled              = var.multi_az_enabled

for me. What could be the problem?

[r4j4h]

@pbn4 it looks like upgrading AWS provider to version 3.26.0 or later fixes this, see this comment for more details.