Generate internal SSL Certificate as part of aws-resource

[mbloch1986]

Is your feature request related to a problem? Please describe.
The user shouldn't provide a SSL Certificate for configuring the internal SSL communication in the AEM Keystore. Instead a certificate should be generated in AWS ACM. The ARN of the certificate gets stored in the SSM Parametr Store which packer-aem will consume to retrieve the ACM ARN from.

Describe the solution you'd like
as described above.

• As part of aws-resource generate a certificate in AWS ACM
• store ARN in SSM Parameter Store
• Consume SSM Parameter Store name in Packer-AEM to retrieve the Certificate + private key
• One Input paramter less to worry about for the user

Additional context
We have to check if you can retrieve the private key from the ACM, as the AEM Keystore requires the Private Key for configuring SSL.