Enable remote debugging
Set WP_DEBUG and JETPACK_DEV_DEBUG true.

The www-data user doesn't have access to environment varaibles,
so the getenv call always returns true.
Set JETPACK_DEV_DEBUG in local config.
Set owner of shared files to www-data:www-data.

Otherwise every provision tries to change the owner of them all.
Set dmode=775, fmode=664 in Vagrant

Like b58f746618c9913baca4c7ec226b44be1f8b0114, we should match what
is happening in Puppet so every file doesn't have to be updated on
every provision.
Merge pull request #366 from johnciacia/master

Enable remote debugging
Organize provider overrides in Vagrantfile
Merge branch 'master' into feature-rsync

Conflicts:
	Vagrantfile