Pipeline local filesystem: rsynced folders don't allow x permission for group

[remileduc]

I have this issue:
I use a pipeline local filesystem to link the storage with the dashboard. In the dashboard, the services are run with the archivematica user.

For some reasons, when the storage sends files to the dashboard, it uses another user to ssh in the dashboard, called archivematica-storage.

Both archivematica and archivematica-storage are in the group archivematica, so the folders created by the storage on the dashboard look like this:

drwxrw-rw-. 1 archivematica-storage archivematica 0 Aug  9 15:26 archive

As you can see, groups can't execute the folder (so they can't see what's in). So, when the dashboard wants to use it, via the archivematica user, it doesn't work.

For me, it makes sense that the created folders have the execute permission as long as they already have read and write, thus I suggest the following PR: #227