turn off swift by default

swift port selection is still really suboptimal. 6011 is often used
by ssh x-forwarding, so if you are sshed into the box with
x-forwarding, then one of the swift services doesn't start.

disable this until we figure out a better path to port selection.

Change-Id: I62b9f96f24118ddfc962715e55b34c05dbe03a1b
Use default swift pipeline and add extras.

- By default use the default pipeline as shipped with swift.
- Add option SWIFT_EXTRAS_MIDDLEWARE which by default include tempurl
  formpost staticweb bulk to enable extra featuress.
- Clean pids in cleanup_swift Fix bug 1140364.

Rebased

Change-Id: Ida537ae8d3e319a5b84546f82ebf00615f070be1
Merge "turn off swift by default"