Default to non-shallow app deployments to fix deployment on latest Amazon Linux Git version.
Fix detection of existing filesystem.
Fix RAID assembly when it is assembled by OS before chef run.
Add feedback from code review - mostly naming.
Merge commit '00af6e8c63109dcef2f872518491b73333aace80'
Remove `default_backend` calls in HAProxy config.

This closes the issue where the staging cache was poisoned
by accessing it through a forwarded domain.