* swarm/storage/localstore: close localstore in two tests
* swarm/storage/localstore: fix a possible deadlock in tests
* swarm/storage/localstore: re-enable pull subs tests for travis race
* swarm/storage/localstore: stop sending to errChan on context done in tests
* swarm/storage/localstore: better want check in readPullSubscriptionBin
* swarm/storage/localstore: protect chunk put with addr lock in tests
* swamr/storage/localstore: wait for gc and writeGCSize workers on Close
* swarm/storage/localstore: more correct testDB_collectGarbageWorker
* swarm/storage/localstore: set DB Close timeout to 5s
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