Update the kubernete and docker verion in readme

default to kubedns &set nxdomain in kubedns deployment if that's the dns_mode

- kubernetes v1.6.1
- docker v1.13.1

Signed-off-by: Hui Kang <hkang.sunysb@gmail.com>

Updated kubernetes-apps helm installation

Added full path for helm

Adding /O=system:masters to admin certificate

Add support for different tags for netcheck containers

bootstrap task on centos missing packages

Updating calico to v2.1.4

mount os-release to ensure the node's OS is what's seen in k8s api

Fix link from ansible.md to calico.md

This commit fixes a broken link from ansible.md to calico.md.

Switch CI to ansible 2.3.0

Replace 'netcheck_tag' with 'netcheck_version' and add additional
'netcheck_server_tag' and 'netcheck_agent_tag' config options to
provide ability to use different tags for server and agent
containers.

Closes: 1253
Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>

Ansible 2.3 support

- Fix when clauses in various places
- Update requirements.txt
- Fix README.md

Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>

add MY_NODE_NAME variable into netchecker-agent environment

Specify a dir and attach it to helm for HELM_HOME

add some known tweaks that need to be made for coreos to docs

on centos.  The bootstrap tty fixup needs it.

allow for correct aws default resolver

Change DNS policy for kubernetes components

When VPC is used, external DNS might not be available. This patch change
behavior to use metadata service instead of external DNS when
upstream_dns_servers is not specified.

Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>

According to code apiserver, scheduler, controller-manager, proxy don't
use resolution of objects they created. It's not harmful to change
policy to have external resolver.

Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>

Move namespace file to template directory

Explicitly create cni bin dir

Fix IPS array variable expansion