zone_id input listed as not required, throws error if not defined

[kuritonasu]

I might be missing something here, but the 'zone_id' input is listed as not required with a default value of 'false' thus if it's not defined, TF throws an error:

Error: Error applying plan:

1 error(s) occurred:

• module.elasticache.module.elasticache-redis.module.dns.aws_route53_record.default: 1 error(s) occurred:

• aws_route53_record.default: NoSuchHostedZone: No hosted zone found with ID: false
  status code: 404, request id: a98d55b6-a9ca-11e8-87cd-a1203e2fe555

If it is set to empty literals:

Error: module.elasticache.module.elasticache-redis.module.dns.aws_route53_record.default: zone_id must not be empty

[MoonMoon1919]

I noticed this as well, I can make a fix within the next few days, hopefully this weekend.

[MoonMoon1919]

Fixed in https://github.com/cloudposse/terraform-aws-elasticache-redis/releases/tag/0.7.2