[OE-core] [oe-core][PATCH] recipetool: add missed module

[Lei Yang]

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

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

Signed-off-by: Lei Yang <Lei.Yang at windriver.com>
---
 scripts/lib/recipetool/create_npm.py | 1 +
 1 file changed, 1 insertion(+)

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
-- 
2.17.1