* Fix proxy and module_hotfixes

On CentOS 8 with proxy ansible render inline `proxy` and `module_hotfixes` options.

For example:

`proxy=http://127.0.0.1:3128module_hotfixes=True`

But expected result:

```
proxy=http://127.0.0.1:3128
module_hotfixes=True
```

* Use ini_file module for work with ini files

* Prevent duplicates proxy= option in /etc/yum.conf

Module `lineinfile` is weak, use most powerful module `ini_file` and add or remove `proxy=` when `http_proxy` is defined or not.

Signed-off-by: Chris Randles <randles.chris@gmail.com>

we can't set module_hotfixes=True using yum_repository ansible module
Fixes 38688a44
(keep docker-ce.repo name)

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* 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

* Add docker-ce 19.03 packages for Debian & Ubuntu

K8s has updated the recommended Docker version to 19.03. More
specifically it should be 19.03.4, but since we used 18.06.7 instead of
.2, I'm assuming the latest patch version should be used here as well.

* Add docker 19.03 for redhat

This 38688a44 change replaces the
value for dockerproject_.+_repo_.+ docker variables but their new
value was previously defined in other variables. This change removes
the dockerproject_.+_repo_.+ docker variables in favor of the older
ones.

Fixing and issue where if the pids in the orphan list no longer exist then all systemd child processes would be killed. (#5636)

* Remove stale legacy yum docker repo /etc/yum.repos.d/docker.repo

* move task 'Remove legacy docker repo file' to pre-upgrade.yml

* Change dockerproject.org to download.docker.com

dockerproject.org was deprecated in 2017 and has gone down.

* Restore yum repo for containerd

Change-Id: I883bb512a2164a85865b1bd4fb569af0358c8c2b

Co-authored-by: Craig Rodrigues <rodrigc@crodrigues.org>

* Fix python3-libselinux installation for RHEL/CentOS 8

In bootstrap-centos.yml we haven't gathered the facts,
so #5127 couldn't work

Minimum ansible version to run kubespray is 2.7.8,
so ansible_distribution_major_version is defined an there is no need to default it

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* Restart NetworkManager for RHEL/CentOS 8

network.service doesn't exist anymore
 # systemctl status network
 Unit network.service could not be found.

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

* Add module_hotfixes=True to docker / containerd yum repo config

https://bugzilla.redhat.com/show_bug.cgi?id=1734081
https://bugzilla.redhat.com/show_bug.cgi?id=1756473


Without this setting you end up with the following error:
 # yum install docker-ce
 Failed to set locale, defaulting to C
 Last metadata expiration check: 0:03:21 ago on Thu Sep 26 22:00:05 2019.
 Error:
  Problem: package docker-ce-3:19.03.2-3.el7.x86_64 requires containerd.io >= 1.2.2-3, but none of the providers can be installed
   - cannot install the best candidate for the job
   - package containerd.io-1.2.2-3.3.el7.x86_64 is excluded
   - package containerd.io-1.2.2-3.el7.x86_64 is excluded
   - package containerd.io-1.2.4-3.1.el7.x86_64 is excluded
   - package containerd.io-1.2.5-3.1.el7.x86_64 is excluded
   - package containerd.io-1.2.6-3.3.el7.x86_64 is excluded
 (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

Fixed Issue #1032

test case for OEL7 AIL with kubeadm

Add packet CI stuff for oracle 7

* Add support for Docker plugins

* support multiple Docker plugins using looped include

* fix yamllint error

* use dpkg_selections module to hold docker-ce on Debian family hosts

* removed debian_docker.j2 template as it is no longer required

When docker_container_storage_setup is false,
docker service should not depend on docker-storage-setup service,
because it's not installed.

For example, when using overlay2 on recent RHEL 7/Centos 7 kernels,
you most likely don't need it.

We don't need to support upgrades from 2 year old installs,
just from the last major version.

Also changed most retried tasks to 1s delay instead of longer.

As of kubernetes v1.14, docker 18.09 is [validated for use](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.14.md#external-dependencies). Docker 1.11 and 1.12 were dropped.

This patch:
- Updates the default docker version to 18.09
- Updates Docker packages to the latest 18.09 patch (18.09.5)
- Removes options for Docker 1.11 and 1.12

* Vagrantfile: Bump openSUSE to Leap 15.0

* roles: container-engine: Add 'containerd' package for openSUSE

The 'containerd' package contains the docker-containerd and
docker-containerd-shim binaries. We also need to ensure that the latest
version is installed since an older version may already be present (eg GCE
images)

* Remove docker log-opts for opensuse

* roles: bootstrap-os: Use lowercase 'o' for openSUSE

OpenSUSE is not a valid family name. The correct one is openSUSE

* roles: bootstrap-os: Update zypper cache before first installation

The zypper cache may be outdated so ensure that it's fully updated
before we try and install the bootstrap packages.

Both the `yum` and `apt` modules support a list as input, this allows us avoid the slower `with_items` approach, which can take a long time with a large count of cluster nodes.

Both kubedns and dnsmasq modes are long not maintained.
We should run dns_late steps at the end because sshd
makes DNS lookups during Ansible run and has 2s timeouts
for each failed lookup trying to connect to coredns before
it is ready.

For some reason 18.09 packages are now prefixed with `5:` in the download.docker.com apt repos
Followup to #4236