Convert all macs to lower case before allowing them into the system.

Remove upper case macs also when removing a mac from a security group

nova_router/security_groups.py

@@ -134,6 +134,7 @@ def get_group_members(etcd_client, group_id):
 
 
 def get_groups_from_mac(etcd_client, mac):
+    mac = mac.lower()
     groups = []
     for group_id in get_security_groups(etcd_client):
         _, members = get_group_members(etcd_client, group_id)
@@ -143,6 +144,7 @@ def get_groups_from_mac(etcd_client, mac):
 
 
 def add_mac_to_group(etcd_client, group_id, mac):
+    mac = mac.lower()
     members_key = security_group_key(group_id) + "/members/by_mac"
     raw_members, members = get_group_members(etcd_client, group_id)
     if mac in members:
@@ -153,11 +155,12 @@ def add_mac_to_group(etcd_client, group_id, mac):
 
 
 def delete_mac_from_group(etcd_client, group_id, mac):
+    mac = mac.lower()
     members_key = security_group_key(group_id) + "/members/by_mac"
     raw_members, members = get_group_members(etcd_client, group_id)
-    if not mac in members:
+    if not mac in [m.lower() for m in members]:
         return
-    members.remove(mac)
+    members = [m for m in members if m.lower() != mac]
     new_members = "\n".join(members)
     logging.debug("new members: %s", new_members)
     if not new_members: