Description of problem:
-----------------------
When using the ansible role to deploy the hosted engine this times out during the "Wait for local vm" task.

How reproducible:
-----------------
Always

Steps to Reproduce:
-------------------
1. follow the steps in the "Automating RHHI for Virtualization deployment" document

Actual results:

TASK [ovirt.hosted_engine_setup : Wait for the local VM] ******************************************************************************************************************************************************
fatal: [localhost -> zplk1028.adm.siverek.enedis.fr]: FAILED! => {"changed": false, "elapsed": 186, "msg": "timed out waiting for ping module test success: Using a SSH password instead of a key is not possible because Host Key checking is enabled and sshpass does not support this.  Please add this host's fingerprint to your known_hosts file to manage this host."}

Expected results:
-----------------
Deployment succeeds

Additional info:
----------------
This appears to be an issue zhere ssh-ing in to the vm (which was correctly started) was impossible.
As a workaround I logged in to the hosted engine VM frm a different window to make sure the host key was in known_hosts. This made the script progres, but it landed in the next issue...

TASK [ovirt.hosted_engine_setup : Add an entry for this host on /etc/hosts on the local VM] *******************************************************************************************************************
fatal: [localhost]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: u\"hostvars['zplk0023']\" is undefined\n\nThe error appears to be in '/usr/share/ansible/roles/ovirt.hosted_engine_setup/tasks/bootstrap_local_vm/03_engine_initial_tasks.yml': line 8, column 5, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n      timeout: 180\n  - name: Add an entry for this host on /etc/hosts on the local VM\n    ^ here\n"}


Fix is required in gluster-ansible-roles to remove the param 'he_ansible_host_name' from /etc/ansible/roles/gluster.ansible/playbooks/hc-ansible-deployment/he_gluster_vars.json


[root@ ~]# cat /etc/ansible/roles/gluster.ansible/playbooks/hc-ansible-deployment/he_gluster_vars.json
{
  "he_appliance_password": "encrypt-password-using-ansible-vault",
  "he_admin_password": "UI-password-for-login",
  "he_domain_type": "glusterfs",
  "he_fqdn": "FQDN-for-Hosted-Engine",
  "he_vm_mac_addr": "Valid MAC address",
  "he_default_gateway": "Valid Gateway",
  "he_mgmt_network": "ovirtmgmt",
  "he_ansible_host_name": "host1",    <<------------------- This needs to be removed
  "he_storage_domain_name": "HostedEngine",
  "he_storage_domain_path": "/engine",
  "he_storage_domain_addr": "host1",
  "he_mount_options": "backup-volfile-servers=host2:host3",
  "he_bridge_if": "interface name for bridge creation",
  "he_enable_hc_gluster_service": true,
  "he_mem_size_MB": "4096",
  "he_cluster": "Default"
}