Upgrade Kubernetes to V1.11.2
The kubeadm configuration file version has been upgraded from v1alpha1 to v1alpha2
Add bootstrap kubeadm-config.yaml with external etcd

* Update local-volume-provisioner-ds.yml.j2

After v1.10.2 default mountPropagation is "None"

* local_volume_provisioner version bump

v2.1.0 uses the beta nodeAffinity API by default which is available starting 1.10

* Update local-volume-provisioner-ds.yml.j2

MY_NAMESPACE env

* Update README.md

Raw block devices docs.

Update all configs to current upstream state.
Add more resources (unable to pass tests now)...

Use helm install or support in future

Upstream Changes:

-   weave 2.4.0 (https://github.com/weaveworks/weave/releases/tag/v2.4.0)
-   Support `externalTrafficPolicy: Local` (https://github.com/weaveworks/weave/issues/2924)
-   Make the ipset list size bigger (https://github.com/weaveworks/weave/pull/3305)
-   Break out of kube rm-peers loop if nothing changes (https://github.com/weaveworks/weave/pull/3317)

Our Changes:

-   Revamp weave-net.yml.j2 with upstream changes
-   Add more variables for customization
-   Replace WEAVE_PASSWORD with k8s secret
-   Remove hard-corded seed mode support, in favor of variables customization

Upstream Changes:

-   ingress-nginx 0.17.1 (https://github.com/kubernetes/ingress-nginx/releases/tag/nginx-0.17.1)
-   Remove duplicated `securityContext` (https://github.com/kubernetes/ingress-nginx/pull/2705)
-   Remove --publish-service flag, in favor of DaemonSet + hostPort

Close #2998
Close #2999

Upstream Changes:

-   cert-manager 0.4.0 (https://github.com/jetstack/cert-manager/releases/tag/v0.4.0)

ingress-nginx 0.16.2 (https://github.com/kubernetes/ingress-nginx/releases/tag/nginx-0.16.2)

This patch simplify ingress-nginx deployment by default deploy on
master, with customizable options; on the other hand, remove the
additional Ansible group "kube-ingress" and its k8s node label
injection.

Reference to https://kubernetes.io/docs/concepts/services-networking/ingress/#prerequisites:

    GCE/Google Kubernetes Engine deploys an ingress controller on the master.

By changing `ingress_nginx_nodeselector` plus custom k8s node
label, user could customize the DaemonSet deployment target.

If `ingress_nginx_nodeselector` is empty, will deploy DaemonSet on
every k8s node.

Upstream Changes:

-   cert-manager 0.3.2 (https://github.com/jetstack/cert-manager/releases/tag/v0.3.2)

Our Changes:

-   Remove legacy addon dir, manifests and namespace before upgrade

Upstream Changes:

-   Update CEPH_VERSION to mimic (https://github.com/kubernetes-incubator/external-storage/pull/841)

Our Changes:

-   Using image from official repo which contain latest changes (https://quay.io/repository/external_storage/cephfs-provisioner)

-   cephfs-provisioner 06fddbe2 (https://github.com/kubernetes-incubator/external-storage/tree/06fddbe2/ceph/cephfs)

Noteable changes from upstream:

-   Added storage class parameters to specify a root path within the backing cephfs and, optionally, use deterministic directory and user names (https://github.com/kubernetes-incubator/external-storage/pull/696)
-   Support capacity (https://github.com/kubernetes-incubator/external-storage/pull/770)
-   Enable metrics server (https://github.com/kubernetes-incubator/external-storage/pull/797)

Other noteable changes:

-   Clean up legacy manifests file naming
-   Remove legacy manifests, namespace and storageclass before upgrade
-   `cephfs_provisioner_monitors` simplified as string
-   Default to new deterministic naming
-   Add `reclaimPolicy` support in StorageClass

With legacy non-deterministic naming style (where $UUID are generated ramdonly):

-   cephfs_provisioner_claim_root: /volumes/kubernetes
-   cephfs_provisioner_deterministic_names: false
-   Generated CephFS volume: /volumes/kubernetes/kubernetes-dynamic-pvc-$UUID
-   Generated CephFS user: kubernetes-dynamic-user-$UUID

With new default deterministic naming style (where $NAMESPACE and $PVC are predictable):

-   cephfs_provisioner_claim_root: /volumes
-   cephfs_provisioner_deterministic_names: true
-   Generated CephFS volume: /volumes/$NAMESPACE/$PVC
-   Generated CephFS user: k8s.$NAMESPACE.$PVC

* Upgrade k8s to 1.10.2

Bumped etcd version to 3.2.16 as recommended

* Add ipvs fix for v1.10

* change flannel addons test to ha

Upgrade kube-dns to 1.14.10
https://github.com/kubernetes/kubernetes/tree/master/cluster/addons/dns

* Move front-proxy-client certs back to kube mount

We want the same CA for all k8s certs

* Refactor vault to use a third party module

The module adds idempotency and reduces some of the repetitive
logic in the vault role

Requires ansible-modules-hashivault on ansible node and hvac
on the vault hosts themselves

Add upgrade test scenario
Remove bootstrap-os tags from tasks

* fix upgrade issues

* improve unseal logic

* specify ca and fix etcd check

* Fix initialization check

bump machine size

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