Fixup "master: Add --backup to initialize in BACKINGUP"

Ready to apply fixup

neo/master/app.py

@@ -148,7 +148,7 @@ class Application(BaseApplication):
                                  " different from cluster name")
             self.backup_app = BackupApplication(self, upstream_cluster,
                                                 config['upstream_masters'])
-        self.backup_initially = config['backup']
+        self.backup_initially = config.get('backup', False)
 
         self.administration_handler = administration.AdministrationHandler(
             self)

[Xavier Thompson]

Tests mostly pass, with a few failures that are also on previous master tests.

This is ready to fixup.