Remove all storage containers and use host mounts

Middle storage containers add complexity and additional
logic to deployment, upgrades, and downgrades. Removing
them allows host mounts to function better without
workarounds with path hacks.

Additionally, most host mounts operated without a middle
container already. This brings the remaining two (log and
puppet) into line with the others.

Change-Id: I9db2dcc45210affafe62ebe9509a58829fc62ea6
Partial-Bug: #1382527