For TF 0.13.0 support: https://github.com/cloudposse/terraform-null-label/releases/tag/0.17.0

## What

1. Update Version Pinning for Terraform to support 0.13

## Why

1. This is a relatively minor update that the CloudPosse module already likely supports.
1. This allows module consumers to not individually update our Terraform module to support Terraform 0.13.

* Fix typo on example for 'automatic_failover'

* Updated README.md
Co-authored-by: actions-bot <58130806+actions-bot@users.noreply.github.com>

* No number_cache_clusters if cluster_mode_enabled

See https://github.com/cloudposse/terraform-aws-elasticache-redis/issues/64

* No explicit AZs in cluster mode

* Updated README.md
Co-authored-by: actions-bot <58130806+actions-bot@users.noreply.github.com>

It was declared as a variable, but wasn't actually set on the
aws_elasticache_replication_group resource.

This commit adds it to the resource, so the changes can be applied
immediately
Co-authored-by: Maxim Mironenko <simixido@gmail.com>

* Adds dns_subdomain variable to override subdomain

* Adds dns_subdomain var to README

* Updated README.md
Co-authored-by: Maxim Mironenko <simixido@gmail.com>
Co-authored-by: actions-bot <58130806+actions-bot@users.noreply.github.com>

* feat: add ClusterEnabled: true default parameter (unless overwritten)

* fix: endpoint key changes when cluster mode enabled

* feat: set number_cache_clusters when in cluster_mode_enabled

* chore: terraform fmt

Use Security Group rules instead of inline rule blocks. Fix example. Fix README. Update to latest versions of modules. Change region for tests (#54)

* Use Security Group rules instead of inline rule blocks. Fix example. Fix README. Update to latest versions of modules. Change region for tests

* Use Security Group rules instead of inline rule blocks. Fix example. Fix README. Update to latest versions of modules. Change region for tests

* Use Security Group rules instead of inline rule blocks. Fix example. Fix README. Update to latest versions of modules. Change region for tests

* Enable backups
Signed-off-by: Salvatore Mazzarino <apocalipse89@gmail.com>

* Fix README
Signed-off-by: Salvatore Mazzarino <apocalipse89@gmail.com>

* Convert to TF 0.12. Add tests. Add Codefresh test pipeline

* Convert to TF 0.12. Add tests. Add Codefresh test pipeline

* [issue-30] Optional elasticache_subnet_group ID

Add optional variable for the Elasticache subnet group ID so we can 
create the replication group in an already existing subnet group.

* Update main.tf
Co-Authored-By: aknysh <aknysh@users.noreply.github.com>

* Update variables.tf
Co-Authored-By: aknysh <aknysh@users.noreply.github.com>

* Update variables.tf
Co-Authored-By: aknysh <aknysh@users.noreply.github.com>

* Update main.tf
Co-Authored-By: aknysh <aknysh@users.noreply.github.com>

* Address comments, update LICENSE, update descriptions, update `README`

* Update example

* Update README

Fixes #37

* add cloudwatch ok alarm actions

* updating readme from makefile

* adding an input variable for replication_group_id

* fix formatting

* updating docs

* normalize disable method

switch variable default to empty string, switch enable bool to check length of zone_id variable

* regenerate readme

* Paramatrise redis

* Update label version

* Update label version

* Update example

* Fix example
Signed-off-by: Igor Rodionov <goruha@gmail.com>

* Update variables.tf

* Update terraform.md

* Update README.md

* add auth token

* fmt

* update readme properly

* add auth token generation to readme

* Add working example

* fix regression

* Link to example

* fix formatting

* Adding ability to encrypt redis at rest and ability to enable TLS for redis

* Including missing files, generate README correctly

* Fix regression on availability_zone variable (wrong default)

* Fixing spacing

* adding engine_version to elasticache replication group

* changing default engine_version to 4.0.10

This is the newest available engine version available for Redis Elasticache.

* setting default family to redis4.0

Addresses warnings in TF 0.11.x

* Bump `terraform-null-label` version to `0.2.2`

* Remove `tags` from `aws_cloudwatch_metric_alarm`

* Update `README`

* Rename repos, fix `README.md`

* Fix `README.md`

* Fix `README.md`

Assign `attributes` and `tags` from `variables.tf` to `label` module

* Fix port output

* Update output.tf

* Initial

* Added redis

* Added redis

* Added redis

* Added redis

* Use default param group

* Use default param group

* Use default param group

* Fix redis

* Fix redis

* Fix redis

* Fix redis

* Fix redis

* Fix redis

* Fix redis

* Fix redis

* Fix redis

* Fix redis

* Fix default value

* Fix default value

* Update main.tf

* Address PR comments

* Update LICENSE

* Update README.md

* Update LICENSE

* Update README.md