collect Fleet logs and YAMLs in support bundles

Ref: https://github.com/harvester/harvester/issues/2297

Verify Steps:

1. Install Harvester with any nodes
2. Login to Dashboard then navigate to support page
3. Click Generate Support Bundle and do Generate
4. log files should be exist in the zipfile of support bundle:
   • logs/cattle-fleet-local-system/fleet-agent-<randomID>/fleet-agent.log
   • logs/cattle-fleet-system/fleet-controller-<randomID>/fleet-controller.log
   • logs/cattle-fleet-system/gitjob-<randomID>/gitjob.log