Pull up fix from branch:  Handle missing directory records when generating sharedDropboxACEs ( https://trac.calendarserver.org/changeset/13178/ )


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13593 e27351fd-9f3e-4f54-a53b-843176b1656c
Make sure we do all the init things.


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13594 e27351fd-9f3e-4f54-a53b-843176b1656c
Re-use the same python executable when doing re-exec tests.


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13595 e27351fd-9f3e-4f54-a53b-843176b1656c