Add possibility to skip adding load balancer name in the hosts file (#9331)

roles/kubernetes/preinstall/defaults/main.yml

@@ -36,6 +36,8 @@ resolveconf_cloud_init_conf: /etc/resolveconf_cloud_init.conf
 
 # All inventory hostnames will be written into each /etc/hosts file.
 populate_inventory_to_hosts_file: true
+# K8S Api FQDN will be written into /etc/hosts file.
+populate_loadbalancer_apiserver_to_hosts_file: true
 
 sysctl_file_path: "/etc/sysctl.d/99-sysctl.conf"
 

roles/kubernetes/preinstall/tasks/0090-etchosts.yml

@@ -35,6 +35,7 @@
     backup: yes
     unsafe_writes: yes
   when:
+    - populate_loadbalancer_apiserver_to_hosts_file
     - loadbalancer_apiserver is defined
     - loadbalancer_apiserver.address is defined