User Story:

As a developer working on the agent-based installer, I want to be able to:

• Update the LoadHostConfigs() applyHostConfig() and findHostConfig() functions in assisted service  to utilize hostnames when MAC addresses are not provided. https://github.com/openshift/assisted-service/blob/master/cmd/agentbasedinstaller/host_config.go#L315-L316

so that I can achieve

• Enable the assignment of host roles based on hostnames in the absence of MAC addresses.
• Ensure the installer can accurately load and apply configurations using hostnames as identifiers.

Acceptance Criteria:

Description of criteria:

• Unit tests are also added
• Point 1
• Point 2
• Point 3

(optional) Out of Scope:

Detail about what is specifically not being delivered in the story

Engineering Details:

• (optional) https://github/com/link.to.enhancement/
• (optional) https://issues.redhat.com/link.to.spike
• Engineering detail 1
• Engineering detail 2

This requires/does not require a design proposal.
This requires/does not require a feature gate.