NIFI-11630 Deprecate ECMAScript and python Script Engines

[exceptionfactory]

Summary

NIFI-11630 Deprecates the ECMAScript and python Script Engine options for scripted components.

The JEP 335 deprecated the Nashorn engine for Java 11 and Java 17 does not include Nashorn.

The current main branch includes framework support for native Python Processors, providing a better alternative to scripted components based on Jython.

The deprecation includes adding DEPRECATED to the Script Engine property display name and logging a deprecation warning when starting a component that uses one of the deprecated Script Engines.

Subsequent efforts can remove these Script Engine options from the main branch while this pull request target the support branch for version 1 releases.

Tracking

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Issue Tracking

• Apache NiFi Jira issue created

Pull Request Tracking

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

[exceptionfactory]

Closing to consider each Script Engine separately.