move ubuntu18 to CI part2

Fix node hostname in glusterfs inventory.example

Fix createhome directory for adduser role

Add ETCD_QUOTA_BACKEND_BYTES environment variable

Revert "gen_certs_script: refactor using stdin (Ansible 2.4+)"

Fix docker apt-repo for Ubuntu18

Cloud provider support for OCI (Oracle Cloud Infrastructure)

gen_certs_script: refactor using stdin (Ansible 2.4+)

Fix kubeadm LB configure

1. join node add LB discoveryTokenAPIServers
2. kubeadm_config_api_fqdn support ipddress and domain_name

* calico upgrade to v3

* update calico_rr version

* add missing file

* change contents of main.yml as it was left old version

* enable network policy by default

* remove unneeded task

* Fix kubelet calico settings

* fix when statement

* switch back to node-kubeconfig.yaml

A typo in the adduser role prevents the createhome
variable to be taken into account.

Fix #3164

Fix install audit failed

1.fix audit log not write
2.fix Parameter not recognized
3.delete kubedm futuregates auditing and use apiServerExtraArgs

PodSecurityPolicy admission controller support

new cilium stable version: 1.2.0

Update ansible.md 

Add ubuntu18 ci job

Always create service account even rbac_enabled = false

Remove duplicate hostname usage.

Signed-off-by: Jeff Bornemann <jeff.bornemann@oracle.com>

allow '.' in hostnames for verify bad hostnames

we use FQDN as inventory_hostname

Add kubeadm controlplaneEndpoint

Audit log to stdout with kubeadm

Custom audit policy