NIFI-11712 Remove java.net.preferIPv4Stack from bootstrap.conf

[exceptionfactory]

Summary

NIFI-11712 Removes the java.net.preferIPv4Stack property from the default bootstrap.conf and related scripts.

The Java Networking Properties describes IPv4 and IPv6 configuration options, noting that the default behavior supports both protocol versions. With various improvements in library support, disabling IPv6 should not be the default setting for new installations of NiFi 2.0.

Removing this default setting does not prevent deployments from adding this property as necessary

Tracking

Please complete the following tracking steps prior to pull request creation.

Issue Tracking

• Apache NiFi Jira issue created

Pull Request Tracking

• Pull Request title starts with Apache NiFi Jira issue number, such as NIFI-00000
• Pull Request commit message starts with Apache NiFi Jira issue number, as such NIFI-00000

Pull Request Formatting

• Pull Request based on current revision of the main branch
• Pull Request refers to a feature branch with one commit containing changes

Verification

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Build

• Build completed using mvn clean install -P contrib-check
  • JDK 11
  • JDK 17

Licensing

• New dependencies are compatible with the Apache License 2.0 according to the License Policy
• New dependencies are documented in applicable LICENSE and NOTICE files

Documentation

• Documentation formatting appears as expected in rendered files