Since we increased the number of concurrent audit workers to two, there are going
to be instances of a single node being audited simultaneously for different segments.
If the node times out for both, we will try to write them both to the pending audits
table, and the second will return an error since the path is not the same as what
already exists. Since with concurrent workers this is expected, we will log the
occurrence rather than return an error.
Since the release default audit concurrency is 2, update testplanet default to run with
concurrent workers as well.
Change-Id: I4e657693fa3e825713a219af3835ae287bb062cb
* rename pkg/linksharing to linksharing
* rename pkg/httpserver to linksharing/httpserver
* rename pkg/eestream to uplink/eestream
* rename pkg/stream to uplink/stream
* rename pkg/metainfo/kvmetainfo to uplink/metainfo/kvmetainfo
* rename pkg/auth/signing to pkg/signing
* rename pkg/storage to uplink/storage
* rename pkg/accounting to satellite/accounting
* rename pkg/audit to satellite/audit
* rename pkg/certdb to satellite/certdb
* rename pkg/discovery to satellite/discovery
* rename pkg/overlay to satellite/overlay
* rename pkg/datarepair to satellite/repair
