feat: send agent config in capabilities

[jajeffries]

This pull request refactors the way agent configuration and connection details are handled and transmitted in the fleet config manager, improving clarity and extensibility. The changes introduce a new ConnectionDetails struct for passing MQTT connection parameters, update the messaging system to include the agent's configuration YAML in capability messages, and update related tests accordingly.

Connection details handling

• Introduced a new ConnectionDetails struct in agent/configmgr/fleet/connection.go to encapsulate all MQTT connection parameters, replacing multiple function arguments with a single struct for clarity and maintainability.
• Refactored all usages of the Connect method in both production and test code to use the new ConnectionDetails struct, ensuring consistent connection parameter passing. [1] [2] [3] [4]

Agent configuration transmission

• Added marshaling of the agent's configuration to YAML and included it as a string in capability messages sent over MQTT, allowing backend systems to receive the agent's full configuration. [1] [2] [3] [4]

Messaging and capabilities

• Updated the sendCapabilities method and related message struct to accept and transmit the agent configuration, and refactored backend info collection for improved error handling and structure. [1] [2]

Test updates

• Modified all relevant unit tests in agent/configmgr/fleet/to_rpc_test.go to supply the agent configuration string and verify its inclusion in capability messages, ensuring full coverage of the new functionality. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14]

Dependency update

• Added the gopkg.in/yaml.v3 dependency for YAML marshaling in the agent configuration manager.

[github-actions]

Go test coverage

STATUS	ELAPSED	PACKAGE	COVER	PASS	FAIL	SKIP
🟢 PASS	0.01s	github.com/netboxlabs/orb-agent/agent	0.0%	0	0	0
🟢 PASS	1.11s	github.com/netboxlabs/orb-agent/agent/backend	33.3%	30	0	0
🟢 PASS	4.03s	github.com/netboxlabs/orb-agent/agent/backend/devicediscovery	67.1%	2	0	0
🟢 PASS	0.01s	github.com/netboxlabs/orb-agent/agent/backend/mocks	0.0%	0	0	0
🟢 PASS	4.03s	github.com/netboxlabs/orb-agent/agent/backend/networkdiscovery	59.0%	2	0	0
🟢 PASS	4.02s	github.com/netboxlabs/orb-agent/agent/backend/opentelemetryinfinity	46.3%	2	0	0
🟢 PASS	4.03s	github.com/netboxlabs/orb-agent/agent/backend/pktvisor	67.0%	2	0	0
🟢 PASS	4.03s	github.com/netboxlabs/orb-agent/agent/backend/snmpdiscovery	58.5%	2	0	0
🟢 PASS	5.03s	github.com/netboxlabs/orb-agent/agent/backend/worker	68.1%	3	0	0
🟢 PASS	1.01s	github.com/netboxlabs/orb-agent/agent/config	100.0%	6	0	0
🟢 PASS	31.19s	github.com/netboxlabs/orb-agent/agent/configmgr	50.2%	14	0	0
🟢 PASS	4.55s	github.com/netboxlabs/orb-agent/agent/configmgr/fleet	71.3%	126	0	0
🟢 PASS	1.01s	github.com/netboxlabs/orb-agent/agent/policies	100.0%	15	0	0
🟢 PASS	1.03s	github.com/netboxlabs/orb-agent/agent/policymgr	71.2%	10	0	0
🟢 PASS	23.37s	github.com/netboxlabs/orb-agent/agent/secretsmgr	48.9%	54	0	0
🟢 PASS	1.02s	github.com/netboxlabs/orb-agent/agent/telemetry	81.7%	19	0	0
🟢 PASS	1.01s	github.com/netboxlabs/orb-agent/agent/version	100.0%	1	0	0

Total coverage: 57.4%

[github-actions]

🎉 This PR is included in version 2.5.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀

[github-actions]

🎉 This PR is included in version 2.5.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀