Export ConmonPidFile in 'podman inspect' for containers

This can help scripts provide a more meaningful message when coming
across issues [1] which require the container to be re-created.

[1] eg., https://github.com/containers/libpod/issues/2673

Signed-off-by: Debarshi Ray <rishi@fedoraproject.org>

pkg/inspect/inspect.go

@@ -158,6 +158,7 @@ type ContainerInspectData struct {
 	HostsPath       string                 `json:"HostsPath"`
 	StaticDir       string                 `json:"StaticDir"`
 	LogPath         string                 `json:"LogPath"`
+	ConmonPidFile   string                 `json:"ConmonPidFile"`
 	Name            string                 `json:"Name"`
 	RestartCount    int32                  `json:"RestartCount"` //TODO
 	Driver          string                 `json:"Driver"`