NMS-19448: Trapd Config to DB: Migrate trapd-configuration.xml to CM

[christianpape]

• JIRA: https://opennms.atlassian.net/browse/NMS-19448

[Copilot]

Pull request overview

This PR migrates trapd configuration from XML file-based configuration to the Configuration Management (CM) system in the database, supporting the broader effort to centralize configuration management.

Changes:

• Introduced TrapdConfigDao and DefaultTrapdConfigDao to manage trapd configuration through CM
• Refactored TrapdConfigFactory to use DAO instead of direct file reading
• Added test infrastructure with NullEventForwarder and updated test contexts across the codebase

Reviewed changes

Copilot reviewed 109 out of 109 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
opennms-dao-api/src/main/java/org/opennms/netmgt/dao/api/TrapdConfigDao.java	Defines DAO interface for trapd configuration
opennms-dao/src/main/java/org/opennms/netmgt/dao/jaxb/DefaultTrapdConfigDao.java	Implements DAO using CM service
opennms-config/src/main/java/org/opennms/netmgt/config/TrapdConfigFactory.java	Refactored to use DAO instead of file reading
opennms-config-jaxb/src/main/java/org/opennms/netmgt/config/trapd/TrapdConfiguration.java	Updated field naming from underscore prefix to camelCase
opennms-config-jaxb/src/main/java/org/opennms/netmgt/config/trapd/Snmpv3User.java	Updated field naming from underscore prefix to camelCase
core/test-api/services/src/main/java/org/opennms/netmgt/config/mock/NullEventForwarder.java	Added test mock for EventForwarder
features/config/upgrade/src/main/resources/changelog-cm/36.0.0/changelog-cm.xml	Added CM schema registration for trapd configuration
opennms-dao/src/main/resources/META-INF/opennms/applicationContext-dao.xml	Registered trapd DAO beans and services
Multiple test files	Updated test contexts to include nullEventForwarder configuration

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