M #-: fsck cleans showback if VM history changed (#1800)
M #-: fsck cleans showback if VM history changed (#1800)

(cherry picked from commit c10470c29af6d021cdb6c98c141aaa05be475d9d)

OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one