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

Eventually 2.3 support will be dropped, so this is
a temporary change.

Now adding unjoined members to existing etcd cluster
occurs one at a time so that the cluster does not
lose quorum.

Changed Ansible 2.3 to 2.4

* 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

When downloading containers or files, use boolean
as a default value.

* 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

This will allow running Kubespray when the user who runs it doesn't
have write permissions to the Kubespray dir, at least when not using
bastion.

* 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.

* Add Debian Jessie notes

* Add installation notes for Debian Jessie

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

Portmap allow to use hostPort with CNI plugins. Should fix #1675

* 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

In 1.8, the Node authorization mode should be listed first to
allow kubelet to access secrets. This seems to only impact
environments with cloudprovider enabled.

* Changre raw execution to use yum module

Changed raw exection to use yum module provided by Ansible.

* Replace ansible_ssh_* by ansible_*

Ansible 2.0 has deprecated the “ssh” from ansible_ssh_user, ansible_ssh_host, and ansible_ssh_port to become ansible_user, ansible_host, and ansible_port. If you are using a version of Ansible prior to 2.0, you should continue using the older style variables (ansible_ssh_*). These shorter variables are ignored, without warning, in older versions of Ansible.

I am not sure about the broader impact of this change. But I have seen on the requirements the version required is ansible>=2.4.0.

http://docs.ansible.com/ansible/latest/intro_inventory.html