Pre download all required container images as roles' deps.
Drop unused flannel-server-helper images pre download.
Improve pods creation post-install test pre downloaded busybox.
Improve logs collection script with kubectl describe, fix sudo/etcd/weave
commands.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

Fix download once

Ensure that etcd health checks always pass

Allow failures for coreos/weave

Add service-node-port-range parameter for kube-apiserver

in the etcd handler, the reload etcd action
was called after ansible waits for etcd to be
up, this means that the health checks which are
called immediately after fail (resulting in the etcd
role always failing and never finishing)

This patch changes the order to move the 'wait for etcd
up' resource after the 'reload etcd resource', ensuring that
the service is up before the health check is called.

Unless https://github.com/kubernetes-incubator/kargo/issues/613


fixed.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

* Add download_localhost for the download_run_once mode, which is
  use the ansible host (a travis node for CI case) to store and
  distribute containers across cluster nodes in inventory.
  Defaults to false.
* Rework download_run_once logic to fix idempotency of uploading
  containers.
* For Travis CI, enable docker images caching and run Travis
  workers with sudo enabled as a dependency
* For Travis CI, deploy with download_localhost and download_run_once
  enabled to shourten dev path drastically.
* Add compression for saved container images. Defaults to 'best'.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
Co-authored-by: Aleksandr Didenko <adidenko@mirantis.com>

Add one more step (task) to containers download/upload sequence -
copy saved .tar containers to ansible host (delegate_to: localhost).

Then upload images to target nodes. It uses synchronize module so
if ansible host (localhost) is the same host as kube-master[0] then
new task causes no issues and the copy to localhost process is
basically skipped.

Update roadmap.md

Fix collect/upload logs for CoreOS

Fix failure if image package index is outdated

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

Fix inventory example

Moved the variable setting to the apt-get install part where it matters as requested in the review.

Fix sugested bootstrap options

Improve CI test matrix

Move CNI config and add MTU support for calico-cni

For Travis CI and GCE, add a naive generator script into a markdown table.
Add GCE/Travis CI matrix docs.
Add CoreOS test cases.
Rework existing cases w/o loosing of coverage.
Rework postinstall tests to support CoreOS as well.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

- Move CNI configuration creation for Calico to appropriate
network_plugin role from kubernetes/node.
- Add support for MTU configuration in Calico.

Replace calico-cni binaries with calico/cni container

Fix mountflags and kubelet config

Add missing --require-kubeconfig to the if..else stanza.
Make sure certs dirs mounted in RO.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

update comment with valid options for bootstrap_os

Fix kubelet deprecated options

Fix etcd ssl for canal

Generate kubectl bash completion from kubectl instead of file

upgrade k8s version to 1.4.6

Fix collect_info script

--api-servers now just reads kubeconfig
--config is now --pod-manifest-path

Fixes #542

Fix missing journal ctl utc key.
Rework kube* logs collection.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

- Move CNI configuration from `kubernetes/node` role to
`network_plugin/canal`
- Create SSL dir for Canal and symlink etcd SSL files
- Add needed options to `canal-config` configmap
- Run flannel and calico-node containers with proper configuration