Instead of converting nicely typed service mounts into untyped `Binds`
when creating containers, use the new `Mounts` API which is a 1-1
mapping between service mounts and container mounts.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
(cherry picked from commit 821aeb6a6f)
Signed-off-by: Victor Vieux <victorvieux@gmail.com>