test(dag): introduce test that ensure dag.put can be called without options

As discussed in ipfs/js-ipfs#1415 (comment)

Author: 0x-r4bbit

js/src/dag/put.js

@@ -113,6 +113,10 @@ module.exports = (createCommon, options) => {
       })
     })
 
+    it('should not fail when calling put without options', (done) => {
+      ipfs.dag.put(pbNode, done)
+    })
+
     it.skip('should put by passing the cid instead of format and hashAlg', (done) => {})
 
     // TODO it.skip('Promises support', (done) => {})