Refactor PodFitsPorts
Cleanup generic_scheduler
Refactore calculateOccupancy in pkg/scheduler
In example unit file, run the scheduler as kube, not root

Only the kubelet and proxy do things which need root privs
Merge pull request #2175 from eparis/sched-as-kube-user

In example unit file, run the scheduler as kube, not root
Merge pull request #2168 from claire921/cleanup_predicates

Refactore calculateOccupancy in pkg/scheduler
Merge pull request #2167 from claire921/clean

Cleanup generic_scheduler
Merge pull request #2166 from claire921/refactor_sched

Refactor PodFitsPorts
Refactor PodStatus to PodCondition in internal API for v1beta3
Changed constant values