do not override the hostname with "false"

ansible/roles/rke_configuration/files/cluster-defaults.yml

@@ -65,7 +65,6 @@ services:
       eviction-hard: 'memory.available<100Mi,nodefs.available<1Gi,imagefs.available<1Gi'
       eviction-minimum-reclaim: 'memory.available=0Mi,nodefs.available=0Mi,imagefs.available=0Gi'
       protect-kernel-defaults: 'true'
-      hostname-override: 'false'
       feature-gates: 'RotateKubeletServerCertificate=true'
     extra_binds:
     # Make local storage work with persistent volumes that use `subpath`