Swift Erasure Coding requires the object-reconstructor to be running,
this PR adds the object-reconstructor configuration and systemd/upstart
file.
Additionally, this PR adds testing for an erasure-coding policy as well
as for multiple policies in 1 deployment.
Change-Id: I71fe3d77e93112b9d27c93b37b59e6242cb3e00e
Closes-Bug: #1634859