Fixes for Executor

Created by: bjackman

I looked here to try and figure out if there's a mount option that could let us fix this properly. It sounds like adding context=u:object_r:shell_data_file:s0 to the mount options should fix the issue but it gives me:

'schedtest' is read-only
mount: 'schedtest'->'/data/local/tmp/devlib-target/run_dir': Permission denied

I decided to be pragmatic about it - rather than reading great dusty tomes of SELinux documentation to figure out incantations I suggest we just put it in permissive mode.