Support for Generic Properties

[tobiasschaefer]

We currently support some properties and the ProcessEngine Configuration and JobExecutor Configuration can be overwritten programmatically.

It would be nice to support generic properties as well, similar to the Camunda Spring Boot Starter, see https://docs.camunda.org/manual/latest/user-guide/spring-boot-integration/configuration/#generic-properties

Here is a list of configuration properties: https://docs.camunda.org/manual/latest/reference/deployment-descriptors/tags/process-engine/#configuration-properties

Todo

• make sure that the property values are overwritten if this is done programmatically, e.g. in ProcessEngineConfigurationCustomizer or JobExecutorCustomizer
• document feature and order of property evaluation in README.md
• Please also add a test to verify that this works with a property whose behavior is easily testable.

[Hayvon]

Current implementation status can be found here: https://github.com/Hayvon/micronaut-camunda-bpm/tree/genericProperties

Done:

• Properties can now be set via camunda.bpm.generic-properties.properties
• Application throws exception when undefined properties are set
• Provisional type recognition
• Test added

ToDo:

• setIgnoreInvalidFields and set IngnoreUnknownFields (see: https://github.com/camunda/camunda-bpm-spring-boot-starter/blob/db34812f808381ddd2677c44d0722af159a8cb1d/extension/camunda-spring-boot-starter/src/main/java/org/camunda/bpm/spring/boot/starter/configuration/impl/GenericPropertiesConfiguration.java#L23) not supported
• Improve type conversion --> make it dynamic
• document feature and order of property evaluation in README.md
• Remove obsolete configuration properties #130