configitems: register the 'server.bundle*' family of config

All these config use the same function specifying a default value. We need to
register them all at the same time.

mercurial/configitems.py

@@ -500,6 +500,18 b" coreconfigitem('server', 'bundle1',"
 coreconfigitem('server', 'bundle1gd',
     default=None,
 )
+coreconfigitem('server', 'bundle1.pull',
+    default=None,
+)
+coreconfigitem('server', 'bundle1gd.pull',
+    default=None,
+)
+coreconfigitem('server', 'bundle1.push',
+    default=None,
+)
+coreconfigitem('server', 'bundle1gd.push',
+    default=None,
+)
 coreconfigitem('server', 'compressionengines',
     default=list,
 )

mercurial/wireproto.py

@@ -595,11 +595,11 b' def bundle1allowed(repo, action):'
     gd = 'generaldelta' in repo.requirements
 
     if gd:
-        v = ui.configbool('server', 'bundle1gd.%s' % action, None)
+        v = ui.configbool('server', 'bundle1gd.%s' % action)
         if v is not None:
             return v
 
-    v = ui.configbool('server', 'bundle1.%s' % action, None)
+    v = ui.configbool('server', 'bundle1.%s' % action)
     if v is not None:
         return v