Enable customization of calico-node docker image

upgrade weave version to 1.6.1

New vars: calico_node_image_repo and claico_node_image_tag
Defaults: calico/node and {{ calico_version }}, respectively

ensure bin dir for coreos before anything else

Refactor roles and hosts

Shorten deployment time with:
- Remove redundand roles if duplicated by a dependency and vice versa
- When a member of k8s-cluster, always install docker as a dependency
  of the etcd role and drop the docker role from cluster.yaml.
- Drop etcd and node role dependencies from master role as they are
  covered by the node role in k8s-cluster group as well. Copy defaults
  for master from node role.
- Decouple master, node, secrets roles handlers and vars to be used w/o
  cross references.

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

Fix handler triggering for kubelet restart

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

Check only for AWS, wrote some docs on actually using AWS

Fix resolv.conf search/nameserver

* Ensure additional nameserver/search, if defined as vars.
* Don't backup changed dhclient hooks as they are going to be
  executed by dhclient as well, which is not what we want.
* For debian OS family only:
- Rename nodnsupdate hook the resolvconf hook to be sourced always
before it.
- Ensure dhclient restarted via network restart to apply the
nodnsupdate hook.
* For rhel OS family, the fix TBD, it doesn't work the same way.

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

Revert regressions

This reverts commit f35e5e86.

This reverts commit 977f82c3.

Adjust collect-info playbook

pass cloud provider flag in all cases, not just openstack

Cleanup collected artifacts,
drop unrelated files/commands.
Always install gitinfos script to binaries for external
use.

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

remove host ca-certs, as they aren't necessary

Fix gen-gitinfos.sh

Fix the error gen-gitinfos.sh: 57: [: foo: unexpected operator

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

Fix resolv.conf search/nameserver

Rename nodnsupdate hook the resolvconf hook to be sourced always
before it.
Ensure dhclient restarted via network restart to apply the
nodnsupdate hook.
Ensure additional nameserver/search, if defined as vars.

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

Restart kubelet if launcher changed

Fixes #409

Fix etcd play to only run on non-k8s-cluster nodes

This decreases the time required to deploy a cluster with
3 nodes, but none are standalone etcd roles.

Copy hyperkube cni plugins optionally for calico deployment

upstreaming to k8s

Fix init scripts for etcd. Fixes #383

Fixes Ubuntu 14.04 deployment of etcd.

force fact check of all nodes first thing

OpenStack minor fix