Upgrade to Kubernetes 1.15.3 (#5091)

* run 'task download_container | Copy image to ansible host cache' with synchronize on download_delegate host

* try to run task copy file to ansible host on all inventory, not only on first random host

This allows the user to optionally specify the dns_domain attribute on the
generated internal kubernetes network.

* update openstack to terraform 0.12(.5)

* replace cluter.tf with cluster.tfvars

* update README.md to terraform 0.12

* update Openstack CI tests to use terraform 0.12

* specify terraform version in openstack README

* gitlab CI to copy cluster.tfvars in case of openstack provider

* The terraform/openstack dynamic inventory can read
tfstate v4 (generated by terraform 0.12) and convert them internally
ro v3 (as generated by terraform 0.11.x).

Additionally the script has been updated to Python 3.

Signed-off-by: Guangming Wang <guangming.wang@daocloud.io>

Signed-off-by: Guangming Wang <guangming.wang@daocloud.io>

Signed-off-by: Bart Verwilst <bart@verwilst.be>

* Test the CI

* Disable CI moderator

* remove svc-default-backend

* update ingress-nginx clusterrole

Change-Id: I7fd94ec6d195af60d237b3cfe91668ca1f707d26

Change-Id: Ia3f30a1216b3ea063cd72c839ef6dff753cf10c6

Fixes situation when using manual mode because it
tries to download coredns v1.3.1 from the same
image repository where kubernetes images are
downloaded from.

Change-Id: Ibbec8a72c8162ce8befa74e2013a268737ea5f8a

Signed-off-by: Craig Rodrigues <craig@portworx.com>

* Update main.yml

* fix dead link 404

* Refactor calico-rr to run in k8s cluster with taint

Change-Id: I75a3169ff5b36ce8302fc7ef1c32d3eb697b5afa

* add preinstall checks

* rework calico/rr role

Change-Id: I2f0a7e6cb77cf91ad4a615923680760d2e5d9ca8

* add empty calico-rr group

Change-Id: I006c0a60db9b72d02245bf8fdfabcf982144a5ad

Change-Id: Ib27d051ff111f813097a9b33a86465a2a30a6db0

Change-Id: I1c59249f08f16d0f6fd60df6ab61f17a0a7df189

Change-Id: I9cc01cef3a437893225e2d9f58495826bbce7be9

Change-Id: I278cb14aa93abf20160cc001f69e2f472504e6d8

* Needs an additional cilium-operator deployment.
  * Added option to enable hostPort mappings.

Change-Id: I278cb14aa93abf20160cc001f69e2f472504e6d8