In case of failed volume migration, status of the volume is
still in-use and the migration status is set to error.
Current reset-migration-status command resets not only
migration status but also volume status. However the volume
status should not reset because the volume is still attached.
Closes-Bug #1552058
Change-Id: I9a8a5ed6a00bdcffecbf98862fe60aee373f5e9b