Ensure batched containers have locks

This won't matter during batched operatins, but if the container
leaks outside of the Batch() function it will segfault if asked
to do any operation that locks unless this is applied

Signed-off-by: Matthew Heon <matthew.heon@gmail.com>

Closes: #226
Approved by: rhatdan

libpod/container.go

@@ -1547,6 +1547,7 @@ func (c *Container) Batch(batchFunc func(*Container) error) error {
 	newCtr.config = c.config
 	newCtr.state = c.state
 	newCtr.runtime = c.runtime
+	newCtr.lock = c.lock
 	newCtr.valid = true
 
 	newCtr.locked = true