Use legacy OpenSSL Format for Apple Devices

[vvorlov]

Description

Uses legacy key format to generate .p12 and .mobileprovision files.

Motivation and Context

openssl@3 uses a modern private key format unsupported on Apple devices because Apple has not updated its libraries. Importing generated .p12 files into the modern macOS and iOS keychain leads to the wrong password error. If you try to export a private key from .p12 and import it into Keychain separately, it will show the wrong format error.

Closes #14558

Based on #14622 with applied comments.

How Has This Been Tested?

1. Amazon Lighstail
2. Cloned repo and installed via METHOD=local ENDPOINT=<ip_adderess> USERS=hello,world ./install.sh. I had to modify the install script to point to the fork on the getAlgo step
3. Downloaded .mobileprovision files
4. Installed on macOS 14.4.1 (23E224)
5. Connected to the server.
6. Installed on iOS 17.4.
7. Connected to the server.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• [] My change requires a change to the documentation.
• [] I have updated the documentation accordingly.
• [] I have added tests to cover my changes.
• [] All new and existing tests passed.

[argium]

This change has broken update-users.