save modification variable to file, and refresh variable in memory

[zhanghangliang]

Hello, Developer! When developing plugins, sometimes I want to save variables to the kettle.properties file in real time, but we seem not to provide similar tools? So I wrote this method

[buildguy]

:white_check_mark: Build finished in 21m 19s

Build command:

mvn clean verify -B -e -Daudit -amd -pl core

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:ok_hand: All tests passed!

Tests run: 4802, Failures: 0, Skipped: 7    Test Results

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:information_source: This is an automatic message