feat(cluster-addon): Use Cluster Addon Stages to instruct CSO (#205)

The Cluster Stack Operator has the `Multi Stage Addon` feature to
install addons in a specified order. This commit adds the configuration
to make use of it at least in a very simple way.

Signed-off-by: Jan Schoone <jan.schoone@uhurutec.com>

Author: jschoone