recipetool: add missed module

When I use recipetool to add a new recipe, it says:

[snip]
sys.exit(14)
NameError: name 'sys' is not defined
[snip]

(From OE-Core rev: 4cf8d01d0066699f39162e25d1cdc847c0175473)

Signed-off-by: Lei Yang <Lei.Yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/scripts/lib/recipetool/create_npm.py b/scripts/lib/recipetool/create_npm.py
index 03667887fc..0b09ed0b04 100644
--- a/scripts/lib/recipetool/create_npm.py
+++ b/scripts/lib/recipetool/create_npm.py
@@ -16,6 +16,7 @@
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 import os
+import sys
 import logging
 import subprocess
 import tempfile