change tests, full path of kubectl binary

use ansible_service_mgr to detect init system

generate secrets on deployment machine

test travis with sudo=true instead of required

pin docker versions to 1.9 or earlier

Integration tests

weave network plugin

Force kube-proxy to bind to local address

split network plugins into distinct roles

fix some issues with fedora 23 and dnf

calico uses --ip option

Increase liveness timeout

add option '--nat-outgoing' for calico on clouds

install epel release for rhel

Update docker for CentOS issues in AWS and general variables

install required packages before common

roles/kubernetes/preinstall/tasks/main.yml

variables.

1. AWS has issues with ext4 (use xfs instead for CentOS only)
2. Make sure all the centos config files are include in the systemd config
3. Make sure that network options are set in the correct file by os family

This allows downstream items like opencontrail and others change variables
in expected locations.

etcd initd startup command fix

Change calico condition --ipip