bug: Templating should skip commented out config

[mbevc1]

Describe the bug
When commenting things out they still get processed by validation/pipeline run. For example account lookups still try to do lookups.

To Reproduce
Create an non-existing account lookup in the comments.

Expected behavior
Validation should skip commented out config.

Please complete the following information about the solution:

• Version: [e.g. v1.11.0]

To get the version of the solution, you can look at the description of the created AWS CloudFormation stack used to install the LZA (AWSAccelerator-InstallerStack). For example, "(SO0199) Landing Zone Accelerator on AWS. Version 1.5.1.". If the description does not contain the version information, you can look at the Parameters of the stack for the RepositoryBranchName as that should contain the version number.

• Region: [e.g. us-east-1]
• Was the solution modified from the version published on this repository?
• If the answer to the previous question was yes, are the changes available on GitHub?
• Have you checked your service quotas for the services this solution uses?
• Were there any errors in the CloudWatch Logs?

Screenshots
n/a

Additional context
n/a