Capacity dependency on dydb partitions

[nitin608]

RCU and WCU have direct dependency on number of partitions. So an increase in only RCU will increase table partitions too, which in turn will decrease WCU per partitions resulting in seprate WCU scaling event as well. Can you please ensure that there be config's for taking care of the same. Mostly in this function: __ensure_provisioning_reads in dynamic_dynamodb/core/table.py.

Regards