[JENKINS-73525] add FIPS compliance checks to plugin when running in FIPS mode

[jmdesprez]

See JENKINS-73525

This PR add compliance checks when running in FIPS mode. The verification rules that I've implemented are as follows:

1. When running in FIPS mode, either TLS or a local pipe must be used
2. When running in FIPS mode, the TLS verification is mandatory (it cannot be skipped)

Checking if FIPS is enabled requires a recent Jenkins version so I bumped the dependencies in 0c690eb

Then I updated those classes to add the FIPS compliance check:

• KubernetesAuthConfig
• HttpClientWithTLSOptionsFactory
• OpenShiftBearerTokenCredentialsImpl

Testing done

For each class, I wrote two unit tests per change: one with FIPS mode enabled, one without. For each test, I checked all the possible combinations.

I generated the keystore using this command:

keytool -genkey -alias unittest -keyalg RSA -keystore src/test/resources/org/jenkinsci/plugins/kubernetes/credentials/keystore.jks -keysize 2048 -ext SAN=DNS:localhost
Enter keystore password:  
Re-enter new password: 
Enter the distinguished name. Provide a single dot (.) to leave a sub-component empty or press ENTER to use the default value in braces.
What is your first and last name?
  [Unknown]:  
What is the name of your organizational unit?
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What is the name of your organization?
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What is the name of your City or Locality?
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What is the name of your State or Province?
  [Unknown]:  
What is the two-letter country code for this unit?
  [Unknown]:  
Is CN=Unknown, OU=Unknown, O=Unknown, L=Unknown, ST=Unknown, C=Unknown correct?
  [no]:  yes

Submitter checklist

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes (No relevant PR)
• Ensure you have provided tests - that demonstrates feature works or fixes the issue

[jmdesprez]

Putting in draft mode while I'm changing the implementation

[PereBueno]

LGTM, just a suggestion that will make spotbugs happy

[fcojfernandez]

@jenkinsci/kubernetes-credentials-plugin-developers can we get a review and merge here?