certz/test_data: suppress EC PARAMETERS in key file

[brianneville]

the key file for ECDSA keys was being created
with an additional pem block specifying
EC PARAMETERS, which is not required.

[gemini-code-assist]

Summary of Changes

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This pull request cleans up the generated ECDSA key files by preventing the inclusion of redundant EC PARAMETERS blocks. By adding the -noout flag to the OpenSSL ecparam command, the output is restricted to the private key itself, ensuring cleaner and more standard-compliant test data.

Highlights

• ECDSA Key Generation: Updated the OpenSSL command to include the -noout flag when generating ECDSA keys.
• PEM Block Cleanup: Removed the unnecessary EC PARAMETERS PEM block from the generated key files.

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[OpenConfigBot]

Pull Request Functional Test Report for #5372 / d955a18

No tests identified for validation.

Help

[gemini-code-assist]

Code Review

This pull request updates the mk_cas.sh script to include the -noout flag in openssl ecparam commands during ECDSA key generation, which suppresses parameter output. I have no feedback to provide.