treewide: Fix recent flake8-check.

Without this patch, I see errors like this on master:
../ofproto/ipfix-gen-entities:115:1: E305 expected 2 blank lines after
class or function definition, found 1

Signed-off-by: Joe Stringer <joe@ovn.org>
Acked-by: Daniele Di Proietto <diproiettod@vmware.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/vtep/ovs-vtep b/vtep/ovs-vtep
index b32a82a90..9a5aa3d68 100755
--- a/vtep/ovs-vtep
+++ b/vtep/ovs-vtep
@@ -752,6 +752,7 @@ def main():
 
     unixctl.close()
 
+
 if __name__ == '__main__':
     try:
         main()