Add 'openshift_hosted_registry_replicas=3'

[netzzer]

Add this option for every scenario that includes Registry. This output does not require a corresponding question. The default of 3 registry pods is a best practice. They all use the SAME glusterfs PV.

Added below as example

registry

openshift_hosted_registry_storage_kind=glusterfs openshift_hosted_registry_storage_volume_size=10 openshift_hosted_registry_replicas=3 openshift_hosted_registry_selector={"region":"infra"}

[ramkrsna]

https://github.com/red-hat-storage/openshift-cic/pull/10

[netzzer]

10 merged