fix: update legacy cipher setting

[joko-sastriawan]

• allow legacy cipher when MPS runs with backward compatibility

PR Checklist

• Unit Tests have been added for new changes
• API tests have been updated if applicable
• All commented code has been removed
• If you've added a dependency, you've ensured license is compatible with Apache 2.0 and clearly outlined the added dependency.

What are you changing?

Allow legacy cipher to be enabled when using Node JS version > 16.

Anything the reviewer should know when reviewing this PR?

Due to the nature of the changes, test is performed on an actual deployment.

Tested using

curl -k --tls-max 1.0 --ciphers 'AES128-SHA:AES256-SHA' https://mpshost:4433/

Tested using real hardware (NUC5i5MHYE-Broadwell) by:

• manually updating MPSCerts ciphers in vault and reload mps service
• new stack deployment with updated mps code
  CIRA on AMT 10 could connect on both cases.

If the there are associated PRs in other repositories, please link them here (i.e. open-amt-cloud-toolkit/repo#365 )

[rsdmike]

closed as is addressed in #1619