* Set host IP for kubelet always

Use ansible default IP if ip var is not set.

* Update main.yml

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

* Workaround ansible bug where access var via dict doesn't get real value

When accessing a variable via it's name "{{ foo }}" its value is
retrieved. But when the variable value is retrieved via the vars-dict
"{{ vars['foo'] }}" this doesn't resolve the expression of the variable
any more due to a bug. So e.g. a expression foo="{{ 1 == 1 }}" isn't
longer resolved but just returned as string "1 == 1".

* Make file yamllint complient

Some time ago I think the hardcoded `/var/lib/docker` was required, but kubelet running in a container has been aware of the Docker path since at least as far back as k8s 1.6.

Without this change, you see a large number of errors in the kubelet logs if you installed with a non-default `docker_daemon_graph`

All nodes get converted to lowercase, so certs should set
CN with lowercase as well.

Add reload yes to reload sysctl if the value of net.ipv4.ip_forward changes.

- name: Enable ip forwarding
  sysctl:
    sysctl_file: "{{sysctl_file_path}}"
    name: net.ipv4.ip_forward
    value: 1
    state: present
    reload: yes
  tags:
    - bootstrap-os

It is now enabled by default in 1.8 with the api changed
to networking.k8s.io/v1 instead of extensions/v1beta1.

This should be done after kubeconfig is set for admin and
before network plugins are up.

Signed-off-by: Haiwei Liu <carllhw@gmail.com>

* Refactor downloads to use download role directly

Also disable fact delegation so download delegate works acros OSes.

* clean up bools and ansible_os_family conditionals

Fixes #1129

* Update main.yml

Needs to set up resolv.conf before updating Yum cache otherwise no name resolution available (resolv.conf empty).

* Update main.yml

Removing trailing spaces

* Add possibility to insert more ip adresses in certificates

* Add newline at end of files

* Move supp ip parameters to k8s-cluster group file

* Add supplementary addresses in kubeadm master role

* Improve openssl indexes

* Revert "Debian jessie docs (#1806)"

This reverts commit d78577c8.

* Revert "[contrib/network-storage/glusterfs] adds service for glusterfs endpoint (#1800)"

This reverts commit 5fb6b2ea.

* Revert "[contrib/network-storage/glusterfs] bootstrap for glusterfs nodes (#1799)"

This reverts commit 404caa11.

* Revert "Fixed kubelet standard log environment (#1780)"

This reverts commit b8384685.

* Revert "Add support for fedora atomic host (#1779)"

This reverts commit f2235be1.

* Revert "Update network-plugins to use portmap plugin (#1763)"

This reverts commit 6ec45b10.

* Revert "Update roadmap (#1795)"

This reverts commit d9879d80.

Change KUBE_LOGGING to KUBE_LOGTOSTDERR, when installing kubelet
as host type.

* don't try to install this rpm on fedora atomic

* add docker 1.13.1 for fedora

* built-in docker unit file is sufficient, as tested on both fedora and centos atomic

* Disable basic and token auth by default

* Add recommended security params

* allow basic auth to fail in tests

* Enable TLS authentication for kubelet

* Restart kubelet on update in deployment-type host on update

* Update install_host.yml

* Update install_host.yml

* Update install_host.yml

* Change file used to check kubeadm upgrade method

Test for ca.crt instead of admin.conf because admin.conf
is created during normal deployment.

* more fixes for upgrade

* add istio addon

* add addons to a ci job

* Clear admin kubeconfig when rotating certs

* Update main.yml

* Rename dns_server to dnsmasq_dns_server so that it includes role prefix
as the var name is generic and conflicts when integrating with existing ansible automation.
*  Enable selinux state to be configurable with new var preinstall_selinux_state