+++ This bug was initially created as a clone of Bug #1161424 +++

Description of problem:
        snapshot config should have a help option which would give details like default value for an attribute, possible values for an attribute, description of the attribute, whether its configurable at system leval or volume leval. some thing similar to "gluster volume set help".

     ovirt can use this help option to decide whether an attribute is configurable at system or volume leval. And console can provide a list from which user can choose possible values for an attribute.

     Its better to get the information related to attributes from gluster than store this info in ovirt engine. As storing this info may lead to inconsistency if anything changes in gluster.

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Additional info:
  --xml option would be needed for the command.