Kie server sync deploy (KIE_SERVER_SYNC_DEPLOY) makes sure that all containers are initialized before the application server/pod is started. Default value of this property in scripts is true.
However Kie server templates [1] [2] disable this property, probably leftover from LA. This may become an issue as requests can be redirected to Kie server without fully initialized containers. I suggest to delete this property from templates so default value can be applied.

[1] https://github.com/jboss-container-images/rhdm-7-openshift-image/blob/rhdm70-dev/templates/rhdm70-kieserver-s2i.yaml
[2] https://github.com/jboss-container-images/rhdm-7-openshift-image/blob/rhdm70-dev/templates/rhdm70-kieserver.yaml