Add argument parsing to make this a proper script.

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Reuse connection objects.

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Add --server flag

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Remove old method used for testing

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Add flag for refreshing already-pushed runs

Also tweak implementation of save_last_run

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>