Delete Share Instance of unmanaged share

Currently, for an unmanaged share, the associated share instance
stays with a status as 'unmanaged', which is not correct.
Associated share instance should be deleted.
Hence made the correction

Change-Id: Ib88205db91d69bd8fc4d98e82b479eadac85b604
Closes-Bug: #1510208
1 file changed
tree: f233a13eda50f7c03453abad4c6d44126829921a
  1. manila_tempest_tests/