BACKEND-1138: Allocate a slot additionally based on JobVertex's ResourceProfile#1

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esevastyanov wants to merge 3 commits intorelease-1.7from

release-1.7-resource

Commits on Feb 19, 2019

Pass jobVertex's ResourceProfile to SlotPool and ResourceManager
esevastyanov
committed
Added a comment for new method getResourceProfile()
esevastyanov
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Use min resources instead of preferred to increase the probability of
esevastyanov
committed