kvs: improving thread control

[gjerecze]

DHT (eRPC) threads and base core id used for KVS poolers and those DHT threads can now be controlled using KVS configuration.

Minidaq adds a new n-dht-threads parameter exposing the number of requested eRPC threads and base-core-id parameter changes the meaning. Thread pinning will be done in the following manner:

• eRPC threads: base-core-id -> base-core-id + n-dht-threads - 1
• KVS poolers: base-core-id + n-dht-threads -> base-core-id + n-dht-threads + n-poolers - 1
• Minidaq RO threads base-core-id + n-dht-threads + n-poolers -> base-core-id + n-dht-threads + n-poolers + n-ro -1
• Minidaq FF threads base-core-id + n-dht-threads + n-poolers + n-ro -> base-core-id + n-dht-threads + n-poolers + n-ro + n-ff -1