pep8: fix style errors reported by pycodestyle 2.1.0

pycodestyle 2.1.0 is in Ubuntu zesty, and complained about the
changes made here.  Simple style changes.  This makes 'make pep8'
pass again when built in a zesty build system with proposed enabled.

1 files changed, 1 insertions, 0 deletions

diff --git a/tools/hacking.py b/tools/hacking.py
index 716c1154..2d366a0a 100755
--- a/tools/hacking.py
+++ b/tools/hacking.py
@@ -156,6 +156,7 @@ def add_cloud():
         if name.startswith("cloud_"):
             exec("pep8.%s = %s" % (name, name))
 
+
 if __name__ == "__main__":
     # NOVA based 'hacking.py' error codes start with an N
     pep8.ERRORCODE_REGEX = re.compile(r'[EWN]\d{3}')