Bring Kubernetes 1.16

This change brings K8s 1.16 to Nordix. Some notes about
K8s 1.16 support of engine.
- The support is only included for the scenario k8-calico-nofeature as
this is the only scenario we tested 1.16 with for the timebeing.
- Installer, infra/installer/kubespray, 1.16 branch is tracked by
this branch.

An example command to deploy K8s 1.16 in online mode with the engine is.

- clone engine repo as usual
- cd engine/engine
- ./deploy.sh -s kubernetes -b 1.16 -c k8-calico-nofeature \
    -p <path to pdf> -i <path to idf> -v

If you are deploying on OpenStack using Heat, you need to
- specify the location of openrc file
- pass heat environment file as pdf

An example command to package K8s 1.16 for offline deployment with the
engine is.

- clone engine repo as usual
- cd engine/engine
- ./package.sh -s kubernetes -b 1.16 -v

Change-Id: Icb0bc8542f6485fa53400474b2e755c76c143c5e