Use IPC to perform detach

[seanvaleo]

Currently, detach relies on the dynamic config mechanism. We should use IPC for this but there are two prerequisites:

• a busy periodic thread should check on IPC requests intermittently
• the CLI should have an appropriate window for waiting for a response - or wait indefinitely?

[jrcheli]

I closed #1496 as a duplicate of this one. The text of that ticket:

• It seems like we could use our recently added IPC functionality to perform the detach operation which would reduce the wait time imposed by the dynamic config mechanism.