What's the reason to remove `localTempDir`? Or is it passed through in some way automatically through the config? Also, it's included in various lines of code in FixedListMachineProvisioningLocation but looks like that code now does nothing.

The `localTempDir` was added because security at an enterprise customer complained about files being written to `/tmp`, so they wanted to configure the dir used for all temp files of brooklyn. I believe this is being set by that customer on various locations, including FixedListMachineProvisioningLocation.