Unable to push records to Replicators when using client-side Networking layer

[carsonfarmer]

Describe the bug
If using the local (client-side) Networking layer (network vs network-client), adding a replicator via addReplicator does not appear to successfully add the replicator addrs to the remote's peer store, thereby causing direct pushes to not happen. This leads to slower updates, because we are then relying on pull based sync, which is currently bounded by the 10 second pull interval.

To Reproduce
Steps to reproduce the behavior:
Run the mocha tests, The Network Client version runs quickly, the Network version gets 'stuck' on the subscribe test.

Expected behavior
Both tests should be reasonably fast, and should be about the same time
Additional context
This is related to/cause by textileio/go-threads#373

[carsonfarmer]

Fixed with textileio/go-threads#374