fix: correct dht reference in ipns routing

[kumavis]

interface was updated here libp2p/js-libp2p#480

[kumavis]

I'm aware that this is intended to be changed to use the content-routing interface instead (#2921 (comment)), but wanted to fix this bug (pushing in an undefined datastore) first as a quick fix

[kumavis]

seeing an error related to the dht, maybe theres a version mismatch to what you get in this repo (via lockfile) vs consuming this package elsewhere

ipfs:       AssertionError: expected undefined to deeply equal [Function: functionStub]
ipfs:       + expected - actual
ipfs:       -[undefined]
ipfs:       +[Function]

[vasco-santos]

Yes, I think we should go this way while we fill the gap on the issue / libp2p side.

[kumavis]

not sure why codecov is failing

[kumavis]

strange

ipfs:       AssertionError: expected 'QmckaNuhfHhZe1wtQC9yPWtZXmu2g5svFnvSenzVu9dANf' to equal 'Qme79tX2bViL26vNjPsF3DP1R9rMKMvnPYJiKTTKPrXJjq'
ipfs:       + expected - actual
ipfs:       -QmckaNuhfHhZe1wtQC9yPWtZXmu2g5svFnvSenzVu9dANf
ipfs:       +Qme79tX2bViL26vNjPsF3DP1R9rMKMvnPYJiKTTKPrXJjq
ipfs:       
ipfs:       at Context.it (/home/travis/build/ipfs/js-ipfs/packages/interface-ipfs-core/src/add.js:5:437)
ipfs:       at process._tickCallback (internal/process/next_tick.js:68:7)

[achingbrain]

Looks good for the most part, not sure about the CI failure, it seems unrelated.

Is there a test that could have picked this up?

[kumavis]

test failure also seems to fail on node v10 and not on v12

[kumavis]

@achingbrain @vasco-santos test failures same as on master #3000

travis jobs:
this pr https://travis-ci.com/github/ipfs/js-ipfs/builds/161639120
master with run-since removed https://travis-ci.com/github/ipfs/js-ipfs/builds/161773080

[achingbrain]

The should add a BIG buffer test is failing on Node 10 due to a regression in ipld-dag-pb, the fix is here: ipld/js-ipld-dag-pb#179