Add Jenkins pipeline for provisioning user-aws-resources.

[cliffano]

The current aws-resources pipelines are related to Packer AEM and AEM AWS Stack Builder life cycles.
There are some aws-resources that would follow the user's lifecycle (the user's AWS account) and not Packer AEM / AEM AWS Stack Builder. For example, the EC2 keypair only need to be created once for each account, and rotated as necessary.
We need a Jenkins pipeline that will run a playbook and apply CF template to provision the following AWS resources:

• EC2 keypair
• S3 bucket for artifacts
• S3 bucket for Packer AEM
• S3 bucket for AEM AWS Stack Builder
• AEM OpenCloud Manager IAM roles
• ACM cert for storing a self-signed cert