Change memory resource to be uint64
Merge branch 'master' into int-for-memory

Conflicts:
	harpoon-agent/api.go
	harpoon-agent/lib/agent.go
	harpoon-agent/lib/mock.go
	harpoon-agent/main.go
	harpoon-scheduler/scheduling_algorithms.go
	harpoon-scheduler/scheduling_algorithms_test.go
Merge pull request #77 from soundcloud/int-for-memory

Change memory resource to be uint64