configitems: register the 'convert.localtimezone' config

hgext/convert/__init__.py

@@ -94,6 +94,9 b" configitem('convert', 'hg.usebranchnames"
 configitem('convert', 'ignoreancestorcheck',
     default=False,
 )
+configitem('convert', 'localtimezone',
+    default=False,
+)
 
 # Commands definition was moved elsewhere to ease demandload job.