Added missing site_model schema declaration
Added missing site_model schema declaration


Former-commit-id: 2fba3dc3205a8d61f7aa629ea6a117fa435cc44c [formerly 35943696308cc8231ccfa0906bfed644953851cf]
Former-commit-id: 2a0801f9d7bd50b302108a78d12c7e1bf3b993fd
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine