Merge pull request #634 from br0ziliy/fix-gce-net-src-tags-param-parsing

gce_net - creating firewall rule, src_range value seems to get lost or set to empty string

cloud/google/gce_net.py

@@ -156,7 +156,7 @@ def main():
             ipv4_range = dict(),
             fwname = dict(),
             name = dict(),
-            src_range = dict(),
+            src_range = dict(type='list'),
             src_tags = dict(type='list'),
             state = dict(default='present'),
             service_account_email = dict(),