Include updateMode to the updating replicas logic

Currently, in Skenario implemented the following updating replicas algorithm for vertical scaling:

Iterate through replicas
Check if we need to update this replica -Is the request < lowerBound or > UpperBound => update
- If we need to update this replica
  - We evict this replica
  - We create new one according to the recommendation

We ignore updateMode state chosen for vpa object in UI. This parameter should be included to the updating replicas logic according to the existent one in VPA.

pivotal / skenario

Include updateMode to the updating replicas logic #120