Fix list assumption in virtual org tests

Author: SpamapS

tests/test_62_vo.py

@@ -33,7 +33,7 @@ def setup_class(self):
         conf.load_file("server_conf")
         self.sp = Saml2Client(conf)
 
-        vo_name = conf.vorg.keys()[0]
+        vo_name = list(conf.vorg.keys())[0]
         self.vo = conf.vorg[vo_name]
         add_derek_info(self.sp)
 
@@ -62,7 +62,7 @@ class TestVirtualOrg_2():
     def setup_class(self):
         conf = config.SPConfig()
         conf.load_file("server_conf")
-        vo_name = conf.vorg.keys()[0]
+        vo_name = list(conf.vorg.keys())[0]
         self.sp = Saml2Client(conf, virtual_organization=vo_name)
         add_derek_info(self.sp)