tools/create-image.sh: add a new option seek

    The usage of current create-image.sh:

    ```
    ./create-image.sh -d=stretch -f=minimal --add-perf

    The options are in the following:

    -d, --distribution         Set on which debian distribution to create
    -f, --feature              Check what packages to install in the image, options are minimal, full
    -s, --seek                 Image size (MB), default 2048 (2G)
    -p, --add-perf             Add perf support with this option enabled

    The default image size may too small (2G) in some debugging scenarios, so change it to configurable.

1 files changed, 1 insertions, 0 deletions

diff --git a/AUTHORS b/AUTHORS
index 5ede57a8e..8fb37048c 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -36,3 +36,4 @@ Mellanox Technologies
 Cody Holliday
 JinWoo Lee
 Andrew Turner
+Ethercflow