This patch removes the 'settings.persistent' option from the configuration as it
only allowed making settings persistent globally instead of individually. This
issue has been addressed in a simpler way by creating a 'persistent-sm-settings'
metadata. If a user wants to make a setting persistent, he can change the
'persistent-sm-settings' metadata object, if the user does not want to make a
persistent change, he can use the 'sm-settings' metadata object. Any changes in
the 'persistent-sm-settings' metadata will be also reflected in the 'sm-settings'
metadata object.