Add Permissions Boundary to Scan Trigger - Full Scan and Scheduled Scan template

[iret-m-murakami]

scan-triggers/aws-python-bucket-full-and-scheduled-scan

Problem to solve

Cannot create stack when Permissions Boundary is required

Proposed solution

• Add stack parameter PermissionsBoundary (similar to the All-in-One template)
• Add attribute PermissionsBoundary to AWS::IAM::Role resources