Add ezpublish-kernel to framework tests

ezpublish-kernel has a unit test suite of about 7786 tests, currently running on both hhvm and hhvm-nighlty on travis. They fail in both cases, but our integrations tests (about 2000 tests testing integrity of API) do now pass on hhvm-nightly.

All passes and failures can be seen here: https://travis-ci.org/ezsystems/ezpublish-kernel


##### About the PR
As compiling hhvm failed for me, I ran the command using --zend like so:
``` hhvm hphp/test/frameworks/run.php --zend /usr/bin/hhvm --record ezpublish-kernel```


Output was:
```
          _
         /(|
        (  :
       __\  \  _____
     (____)  -|
    (____)|   |
     (____).__|
      (___)__.|_____

ALL TESTS COMPLETE!
SUMMARY:
ezpublish-kernel=92.51
```

Produced files:
```
vagrant@vagrant-ubuntu-trusty-64:~/hhvm$ ls -al hphp/test/frameworks/results/ezpublish-kernel.*
-rw-rw-r-- 1 vagrant vagrant       0 Jul  6 17:54 hphp/test/frameworks/results/ezpublish-kernel.diff
-rw-rw-r-- 1 vagrant vagrant 1299356 Jul  6 18:11 hphp/test/frameworks/results/ezpublish-kernel.errors
-rw-rw-r-- 1 vagrant vagrant  717842 Jul  6 18:14 hphp/test/frameworks/results/ezpublish-kernel.expect
-rw-rw-r-- 1 vagrant vagrant     468 Jul  6 17:55 hphp/test/frameworks/results/ezpublish-kernel.fatals
-rw-rw-r-- 1 vagrant vagrant  717842 Jul  6 18:14 hphp/test/frameworks/results/ezpublish-kernel.out
-rw-rw-r-- 1 vagrant vagrant  102177 Jul  6 18:14 hphp/test/frameworks/results/ezpublish-kernel.stats
-rw-rw-r-- 1 vagrant vagrant   96342 Jul  6 15:56 hphp/test/frameworks/results/ezpublish-kernel.testfiles
-rw-rw-r-- 1 vagrant vagrant  501913 Jul  6 15:56 hphp/test/frameworks/results/ezpublish-kernel.tests
```

But from what I could see you only want .expect files in git right?