Provide a procedure to graceful restart AMQ Streams when upgrading OpenShift

• We have provided the documented and tested procedure to upgrade AMQ Streams itself. However, we doesn't provide one when to upgrade OpenShift.
• So it is difficult for the users to choice the most suitable option when upgrading OpenShift.
• Please provide instructions for upgrading OpenShift with the least impact on a running AMQ Streams cluster.

If stoping a node that has a Kafka and a Zookeeper pod for upgrading OpenShift, these Kafka and Zookeeper pod start to terminate at same time.

• In this case, as a known problem, Kafka pod may not be able to gracefull shutdown due to `[ENTMQST-1411]tls-sidecar can terminate earlier than Kafka container itself`.