tests: reenable developer tests.

72d103d6bb deprecated DEVELOPER env var
in favor of config.vars, but didn't update test_closing.py or test_gossip.py.

5d0a54b7f0 then removed the explicit
DEVELOPER= setting from Travis.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

tests/test_closing.py

@@ -2,8 +2,10 @@ from fixtures import *  # noqa: F401,F403
 
 import os
 
+with open('config.vars') as configfile:
+    config = dict([(line.rstrip().split('=', 1)) for line in configfile])
 
-DEVELOPER = os.getenv("DEVELOPER", "0") == "1"
+DEVELOPER = os.getenv("DEVELOPER", config['DEVELOPER']) == "1"
 
 
 def test_closing_id(node_factory):

tests/test_gossip.py

@@ -6,7 +6,10 @@ import time
 import unittest
 
 
-DEVELOPER = os.getenv("DEVELOPER", "0") == "1"
+with open('config.vars') as configfile:
+    config = dict([(line.rstrip().split('=', 1)) for line in configfile])
+
+DEVELOPER = os.getenv("DEVELOPER", config['DEVELOPER']) == "1"
 
 
 @unittest.skipIf(not DEVELOPER, "needs --dev-broadcast-interval, --dev-channelupdate-interval")