block/stream: add block job creation flags

Add support for taking and passing forward job creation flags.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 20180906130225.5118-4-jsnow@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
diff --git a/include/block/block_int.h b/include/block/block_int.h
index b40f0bf..4000d2a 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -958,6 +958,8 @@
  * flatten the whole backing file chain onto @bs.
  * @backing_file_str: The file name that will be written to @bs as the
  * the new backing file if the job completes. Ignored if @base is %NULL.
+ * @creation_flags: Flags that control the behavior of the Job lifetime.
+ *                  See @BlockJobCreateFlags
  * @speed: The maximum speed, in bytes per second, or 0 for unlimited.
  * @on_error: The action to take upon error.
  * @errp: Error object.
@@ -971,7 +973,8 @@
  */
 void stream_start(const char *job_id, BlockDriverState *bs,
                   BlockDriverState *base, const char *backing_file_str,
-                  int64_t speed, BlockdevOnError on_error, Error **errp);
+                  int creation_flags, int64_t speed,
+                  BlockdevOnError on_error, Error **errp);
 
 /**
  * commit_start: