This issue is reported in OpenShift Bugzilla and the engineer asked me to report here.
Also, this ticket is related, but it's not enough to fix the original issue the customer is facing.

Java s2i image requires "no_proxy" environment variable is a non-standard format like ".foo.com,.bar.com". This causes other tools (e.g. curl) not to work properly.
This specification is described here.
https://access.redhat.com/documentation/en-us/red_hat_jboss_middleware_for_openshift/3/html-single/red_hat_java_s2i_for_openshift/#configuration_environment_variables

According to the customer, it looks like this file also needs to be changed.

https://github.com/jboss-openshift/cct_module/blob/master/os-java-run/added/proxy-options

local noProxy="${no_proxy:-${NO_PROXY}}"
if [ -n "$noProxy" ] ; then
ret="$ret -Dhttp.nonProxyHosts=\"$(echo $noProxy | sed -e 's+,+|+g')\""
fi

This needs to have the same logic that was added to common.sh...

local noProxy="${no_proxy:-${NO_PROXY}}"
if [ -n "$noProxy" ]; then
noProxy="${noProxy//,/|}"
noProxy="${noProxy//|./|*.}"
noProxy="${noProxy/#./*.}"
HTTP_PROXY_NONPROXYHOSTS="${noProxy}"
fi

So for example, the following will fix it...

ret="$ret -Dhttp.nonProxyHosts=\"$(echo $noProxy | sed -e 's+^\..+g' | sed -e 's,\.,.+g' | sed -e 's,+|+g')\""