Updating config-gen and error messages

[ArvinthC3000]

🔩 Description: What code changed, and why?

IAM role:

• When the IAM role is attached to the bastion, the user should able to use IAM role instead of IAM User credentials

• prompt to create snapshot credentials

Config gen update

• Update the regex error with the sample pattern in the text label
• gen prompt should show that the subnet id should be added when the user chooses to provide to subnets
• Showing sample values in Label wherever necessary

⛓️ Related Resources

Jira: https://chefio.atlassian.net/browse/CHEF-4734
https://chefio.atlassian.net/browse/CHEF-5511

👍 Definition of Done

👟 How to Build and Test the Change

✅ Checklist

All PRs must tick these:

• I have read the CONTRIBUTING document.
• All commits signed-off for the Developer Certification of Origin.

With occasional exceptions, all PRs from Progress employees must tick these:

• Is the code clear? (complicated code or lots of comments--subdivide and use well-named methods, meaningful variable names, etc.)
• Consistency checked? (user notifications, user prompts, visual patterns, code patterns, variable names)
• Repeated code blocks eliminated? (adapt and reuse existing components, blocks, functions, etc.)
• Spelling, grammar, typos checked? (at a minimum use make spell in any component directory)
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• Tests added/updated? (all new code needs new tests)
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Please add a note next to any checkbox above if you are NOT ticking it.

📷 Screenshots, if applicable

Demo Video

Error message:

IAM role prompt:

Prompt to create snapshot cred

Use existing credentials:

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[sonarqube-for-infrastructure-prod]

SonarQube Quality Gate

0.0% Security Hotspots Reviewed on New Code (is less than 100%)

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