cta/CTA#289 Remove the concept of admin host

catalogue/CMakeLists.txt

catalogue/Catalogue.hpp

catalogue/CatalogueFactoryTest.cpp

catalogue/CatalogueRetryWrapper.hpp

catalogue/CatalogueTest.cpp

catalogue/CatalogueTest.hpp

catalogue/CreateAdminHostCmd.cpp

catalogue/CreateAdminHostCmd.hpp

catalogue/CreateAdminHostCmdLineArgs.cpp

catalogue/CreateAdminHostCmdLineArgs.hpp

catalogue/CreateAdminHostCmdLineArgsTest.cpp

catalogue/CreateAdminHostCmdMain.cpp

catalogue/DropSchemaCmd.cpp

catalogue/DummyCatalogue.hpp

catalogue/RdbmsCatalogue.cpp

catalogue/RdbmsCatalogue.hpp

catalogue/common_catalogue_schema.sql

catalogue/cta-catalogue-admin-host-create.1cta

cmdline/CtaAdminCmdParse.hpp

common/CMakeLists.txt