RHACS Operator should allow private key download to Init Bundle File

Issue

• RHACS Operator does not allow users to download the private key used in the init bundle file.
• There can be a risk especially in large cluster estates where the risk of private key compromise increases.
• Allowing the download of the private key will give us the better management and security.
• Users should be able to download the private key from the init bundle file directly through the RHACS.
• Users should successfully download the private key from the init bundle file.
• The init-bundle download process should be secure and with best practices for sensitive information.