add disk instance column to VO table (#1147)

catalogue/5.0/oracle_catalogue_schema.sql

catalogue/5.0/postgres_catalogue_schema.sql

catalogue/5.0/sqlite_catalogue_schema.sql

catalogue/AllCatalogueSchema.hpp

catalogue/Catalogue.hpp

catalogue/CatalogueRetryWrapper.hpp

catalogue/CatalogueTest.cpp

catalogue/DummyCatalogue.hpp

catalogue/RdbmsCatalogue.cpp

catalogue/RdbmsCatalogue.hpp

catalogue/common_catalogue_schema.sql

cmdline/CtaAdminCmdParse.hpp

common/dataStructures/VirtualOrganization.hpp

xroot_plugins/XrdCtaVirtualOrganizationLs.hpp

xroot_plugins/XrdSsiCtaRequestMessage.cpp

xrootd-ssi-protobuf-interface