In the API:
`Writable` changed to `ReadOnly`
`Populate` changed to `NoCopy`
Corresponding CLI options updated to:
`volume-writable` changed to `volume-readonly`
`volume-populate` changed to `volume-nocopy`
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
This is done in a hacky way as currently there is no better way.
Uses known implementation details about how tasks are scheduled to be
able to operate on the underlying container.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>