BROCCOLI_VIZ=1 ember build is broken

[rwjblue]

Currently, when linking against master and running BROCCOLI_VIZ=1 ember build the following error is triggered:

Build failed.
Cannot read property 'type' of undefined
TypeError: Cannot read property 'type' of undefined
    at Class._computeVizInfo (/Users/rjackson/src/open-source/ember-cli/lib/models/builder.js:96:31)
    at /Users/rjackson/src/open-source/ember-cli/lib/models/builder.js:315:26
    at tryCatch (/Users/rjackson/src/open-source/ember-cli/node_modules/rsvp/dist/rsvp.js:538:12)
    at invokeCallback (/Users/rjackson/src/open-source/ember-cli/node_modules/rsvp/dist/rsvp.js:553:13)
    at publish (/Users/rjackson/src/open-source/ember-cli/node_modules/rsvp/dist/rsvp.js:521:7)
    at flush (/Users/rjackson/src/open-source/ember-cli/node_modules/rsvp/dist/rsvp.js:2373:5)
    at _combinedTickCallback (internal/process/next_tick.js:67:7)
    at process._tickCallback (internal/process/next_tick.js:98:9)

This was broken when we landed #6546. In #6546 we added code that assumes that resultAnnotation is passed to our Builder.prototype.build method (lib/models/builder.js#L96). This is true when our build is triggered by ember-cli-broccoli-sane-watcher due to changes upstream in ember-cli/broccoli-sane-watcher#8.

The fundamental issue is that when running ember build we do not go through ember-cli-broccoli-sane-watcher at all, and we manually invoke our Builder.prototype.build method in the build task (lib/tasks/build.js#L22) but pass in no options.

We either need to make all builds funnel through ember-cli-broccoli-sane-watcher (which seems somewhat odd when we don't want a watcher) or make our build task emit the correct result annotation.

[rwjblue]

Note: This does not affect BROCCOLI_VIZ=1 ember serve, which still works properly (since the .build method is invoked by ember-cli-broccoli-sane-watcher).