Import ports in GrafanaDBSecurityGroupIngress

[giusedroid]

Import ports in GrafanaDBSecurityGroupIngress

As a developer I want to make cloudformation templates as general as possible, so that they can be reusable.

For this issue, the value of ports for a the security group GrafanaDBSecurityGroupIngress in cloudformation/20-grafana-ecs-service.yml has been hardcoded to 3306 for both FromPort and ToPort.

Furthermore, in cloudformation/10-aurora-backend.yml the port of the service is exported with the name ${Environment}-grafana-service-aurora-backend-port.

Reusability of this template could improve by either importing the port or referencing it as a parameter and adding the port to the env variables.

Acceptance Criteria

• the value of the port is not hardcoded
• the value of the port is either imported via Fn::ImportValue or referenced as a CloudFormation parameter.
• if referenced as a parameter, the Makefile must provide the value of the port to the template.