* Adding option to disable gloablly applying a proxy to etc/yum.conf

* Change made to proxy_yum_globaly basedon reviewer feedback

* fix trailing spaces in ymllint

* remove podman cni plugin

* configure networkamanger global dns

* allow installation of python3-libselinux by disabling update repo temporary

* remove ipv4 section because it is not a valid configuration

Trying to layer this package on Fedora 32 causes the install to crash
and furthermore it looks like the original bug linked to in the comment
has been resolved for Fedora 31

* fix upgrade of crio on fcos
- update documents

* install conntrack required by kube-proxy
- like commit 48c41bcb

* enable fedora modular repo for crio

* allow to override crio configuration
- set cgroup manager same to kubelet_cgroup_driver if defined
- path of seccomp_profile depends on distribution

* allow to override crio configuration
- fix path for ubuntu

* allow to override crio configuration
- fix cni path for fcos

* fedora coreos support
- bootstrap and new fact for

* fedora coreos support
- fix bootstrap condition

* fedora coreos support
- allow customize packages for fedora coreos bootstrap

* fedora coreos support
- prevent install ptyhon3 and epel via dnf for fedora coreos

* fedora coreos support
- handle all ostree like os in same way

* fedora coreos support
- handle all ostree like os in same way for crio

* fedora coreos support
- add fcos documentations

* Merge OracleLinux in RedHat bootstrap-os

* Set default for use_oracle_public_repo in main.yaml

* Add README to bootstrap-os role

* Rework bootstrap-os once more

* Document workarounds for bugs/deficiencies in Ansible modules
* Unify and document role variables
* Remove installation of additional packages and repositories
* Merge Ubuntu and Debian tasks
* Remove pipelining setting from default playbooks
* Fix OpenSUSE not running its required tasks

If a centos or rhel node is not configured with the extras repo installation of required packages (python-httplib2 in particular) will fail later on. (#4213)

Looks like `epel_enabled` was not configured for the epel install in `bootstrap-centos.yml`. Also, there were no conditionals that would trigger bootstrap for RHEL.

* remove os_family variable from bootstrap-os

* quote the conditions another time to fix the syntax error

* Fix bootstrap_os/ubuntu idempotency

* Update bastion role

* move container_engine in sub-roles

* requires ansible 2.5

* ubuntu18 as first CI job

* Disable locksmithd on CoreOS if coreos_auto_upgrade set to false

* change when format to support multiple-condition

* allow installs to not have hostname overriden with fqdn from inventory
* calico-config no longer requires local as and will default to global
* when cloudprovider is not defined, use the inventory_hostname for cni-calico
* allow reset to not restart network (buggy nodes die with this cmd)
* default kube_override_hostname to inventory_hostname instead of ansible_hostname

* Change deprecated vagrant ansible flag 'sudo' to 'become'

* Emphasize, that the name of the pip_pyton_modules is only considered in coreos

* Remove useless unused variable

* Fix warning when jinja2 template-delimiters used in when statement

There is no need for jinja2 template-delimiters like {{ }} or {% %}
any more. They can just be omitted as described in https://github.com/ansible/ansible/issues/22397

* Fix broken link in getting-started guide

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