Using official image from mirantis at dockerhub.

* Only download container/file if host is in defined group

* Set correct when clause

* Fix last entries

* Update download groups

- Fix #2414, so namespace isolation should now works
- Update weave-net.yml.j2 as per latest https://cloud.weave.works/k8s/net
- Other minor fixup

- Updating to use calico-node v2.6.7
- A few updates to their manifests too

Added CoreDNS to downloads

Updated with labels. Should now work without RBAC too

Fix DNS settings on hosts

Rename CoreDNS service from kube-dns to coredns

Add rotate based on http://edgeofsanity.net/rant/2017/12/20/systemd-resolved-is-broken.html

Updated docs with CoreDNS info

Added labels and fixed minor settings from official yaml file: https://github.com/kubernetes/kubernetes/blob/release-1.9/cluster/addons/dns/coredns.yaml.sed

Added a secondary deployment and secondary service ip. This is to mitigate dns timeouts and create high resitency for failures. See discussion at 'https://github.com/coreos/coreos-kubernetes/issues/641#issuecomment-281174806'

Set dns list correct. Thanks to @whereismyjetpack

Only download KubeDNS or CoreDNS if selected

Move dns cleanup to its own file and import tasks based on dns mode

Fix install of KubeDNS when dnsmask_kubedns mode is selected

Add new dns option coredns_dual for dual stack deployment. Added variable to configure replicas deployed. Updated docs for dual stack deployment. Removed rotate option in resolv.conf.

Run DNS manifests for CoreDNS and KubeDNS

Set skydns servers on dual stack deployment

Use only one template for CoreDNS dual deployment

Set correct cluster ip for the dns server

Upgrade to Kubernetes v1.9.3

* Added cilium support

* Fix typo in debian test config

* Remove empty lines

* Changed cilium version from <latest> to <v1.0.0-rc3>

* Add missing changes for cilium

* Add cilium to CI pipeline

* Fix wrong file name

* Check kernel version for cilium

* fixed ci error

* fixed cilium-ds.j2 template

* added waiting for cilium pods to run

* Fixed missing EOF

* Fixed trailing spaces

* Fixed trailing spaces

* Fixed trailing spaces

* Fixed too many blank lines

* Updated tolerations,annotations in cilium DS template

* Set cilium_version to iptables-1.9 to see if bug is fixed in CI

* Update cilium image tag to v1.0.0-rc4

* Update Cilium test case CI vars filenames

* Add optional prometheus flag, adjust initial readiness delay

* Update README.md with cilium info

Bump kube-dns to 1.14.8

Raise drain timeout to 5m

Update checksum for kubeadm
Use v1.9.0 kubeadm params
Include hash of ca.crt for kubeadm join
Update tag for testing upgrades
Add workaround for testing upgrades
Remove scale CI scenarios because of slow inventory parsing
in ansible 2.4.x.

Change region for tests to us-central1 to
improve ansible performance