* Remove unused submodule output

This breaks plan when trying to create a read replica without setting
the master password.

module.database.module.db_instance.local.this_db_instance_password: local.this_db_instance_password: Resource 'aws_db_instance.this' does not have attribute 'password' for variable 'aws_db_instance.this.*.password'

* Add postgres and mysql replica example

* Add tags to enhanced_monitoring iam_role

* give priority to tags defined by user

* Create parameter group with custom name

* Allow setting of parameter group description too

* Move locals into main.tf

* Include "no_prefix" resource in output

* Update all README files with terraform docs

* Add-deletion_protection-argument

* Add-deletion_protection-argument

Add ability to set terraform timeouts{} map for aws_db_instance resources

* Support database option group

* support option group with latest

* adding two missing arguments for aws_db_instance: timezone & character_set_name

* added character_set_name to oracle example

* added example for mssql

* added link to readme

* moved tags to last line

* fixed mssql example

* Added conditional mssql db_instance based on var.engine. Added conditional outputs

* ✨ Enable db_subnet_group_name variable

If the variable not specify then use the db_subnet_group module

* Disable create_db_subnet_group if db_subnet_group_name is defined

* Support conditional creation for the database too.

* Database instance outputs need to accommodate the case where count is zero.

* Declare variables that allow conditional creation of the database, parameter group, and subnet group. Pass them from main.tf to the nested modules.

* Consistently accommodate boolean like arguments.