Add CurrentMemoryLimit to IContainer

[benmoss]

Hi @brannon

We're working on adding the ability to constrain memory (https://www.pivotaltracker.com/story/show/92180278) and need the ability to get the current memory limit from the job object.

We left the ContainerStub implementation throwing a NotImplementedException since we weren't sure what that class is for and weren't sure if it was relevant for us.

Ben & Dave

[cfdreddbot]

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[brannon]

@benmoss it looks like you need to publicize your cloudfoundry membership in GitHub, so that cfdreddbot recognizes your CLA.

I'll take a look at the PR. It's probably safe to leave the ContainerStub method as-is. I have an outstanding PR as well that should obsolete ContainerStub.

I was planning to merge my PR today, so we should coordinate these.

[benmoss]

Membership has been publicized. We're happy to chat whenever you are, you can reach us on Slack via Dave Goddard's account.

[brannon]

@benmoss @dgoddard I'll go ahead and merge this and then merge my PR afterward. My PR is so large, I don't want to block you guys if it causes problems.