Online free-tier resource restrictions need to be documented

[tiwillia]

In OpenShift Online free-tier, resource specifications are restricted so that the only resource that users can specify is the memory limit.

Normally, users would specify a cpu request, cpu limit, memory request, and memory limit. However in openshift online, users can only specify the memory limit. The memory request, cpu request, and cpu limit will be automatically calculated based on the specified memory limit. In general, this ratio will be roughly 1cpu per every 512Mi of memory specified in the limit.

@ahardin-rh fyi, I can work with you on fitting this information in somewhere. Its mentioned in the pricing page but isn't documented anywhere else.