-[MGLOfflineStorageTests testAAALoadPacks] fails

[1ec5]

-[MGLOfflineStorageTests testAAALoadPacks] – so named because it’s supposed to run before all the other tests in the test case – is running last for some reason, leading to the following failure on iOS (but not macOS for some reason):

Test Case '-[MGLOfflineStorageTests testAAALoadPacks]' started.
/Users/mxn/hub/mapbox-gl-native-3/platform/darwin/test/MGLOfflineStorageTests.m:22: error: -[MGLOfflineStorageTests testAAALoadPacks] : Asynchronous wait failed: Exceeded timeout of 1 seconds, with unfulfilled expectations: "Expect change to packs of <MGLOfflineStorage: 0x7fcacbf0edd0>".
Test Case '-[MGLOfflineStorageTests testAAALoadPacks]' failed (1.030 seconds).
Test Suite 'MGLOfflineStorageTests' failed at 2016-08-14 12:13:45.269.

The failure just started happening on Bitrise last night for some reason, but I can reproduce it locally.

/cc @friedbunny @boundsj