Use None for argv

Fixed bug where the command line options to connmon didn't work due to
incorrect argument signature for the main() function.

Fixes: #7
Change-Id: I224a2f42b12711151168eb4f3c26e068a23754ca

Author: zzzeek

sqlalchemy_collectd/connmon/main.py

@@ -7,7 +7,7 @@
 from ..server import receiver
 
 
-def main(argv=[]):
+def main(argv=None):
     parser = argparse.ArgumentParser()
 
     parser.add_argument(

unreleased_changes/7.rst

@@ -0,0 +1,6 @@
+.. change::
+    :tags: bug
+    :tickets: 7
+
+    Fixed bug where the command line options to connmon didn't work due to
+    incorrect argument signature for the main() function.