podman healthcheck run (phase 1)

Add the ability to manually run a container's healthcheck command.
This is only the first phase of implementing the healthcheck.
Subsequent pull requests will deal with the exposing the results and
history of healthchecks as well as the scheduling.

Signed-off-by: baude <bbaude@redhat.com>

cmd/podman/commands.go

@@ -121,3 +121,10 @@ func getSystemSubCommands() []*cobra.Command {
 		_renumberCommand,
 	}
 }
+
+// Commands that the local client implements
+func getHealtcheckSubCommands() []*cobra.Command {
+	return []*cobra.Command{
+		_healthcheckrunCommand,
+	}
+}