Hyperbahn lazy relay errors

[Raynos]

1.  Cannot read property 'length' of undefined      316
2.  Object #<LazyRelayOutReq> has no method 'onTimeout'     178
3.  Cannot call method 'cancel' of null     4
4.  Object #<LazyRelayInReq> has no method 'onTimeout'         2

cc @jcorbin

[jcorbin]

Working on this in uber/tchannel-node#37

[jcorbin]

1. is uber/tchannel-node@6e6f527

[jcorbin]

Numbers 2. and 4. are uber/tchannel-node@ccb39cd

[jcorbin]

We've decided that 3. is Not A Thing ™, and are chalking it up to state corruption caused by one of the other uncaughts mentioned here.

[jcorbin]

We've also seen:

TypeError: Object #<LazyRelayOutReq> has no method 'emitError'
    at eachOutOp (.../tchannel/connection.js:606:13)
...

now fixed in mentioned PR.

[jcorbin]

Related #31 will be solved separately.