NewReplicaSetController creates a new ReplicaSetController.

Realistic value of the burstReplica field for the replica set manager based off performance requirements for kubernetes 1.0.

We'll attempt to recompute the required replicas of all ReplicaSets that have fulfilled their expectations at least this often.

We must avoid counting pods until the pod store has synced.

ReplicaSetController is responsible for synchronizing ReplicaSet objects stored in the system with actual running pods.