Added a pid column to the job table [skip hazardlib][demos]
Added a pid column to the job table [skip hazardlib][demos]


Former-commit-id: d76bb3abbf8317b5d523cb0d357f78fb0f5e0cfe [formerly 74be347000e480a139d59d290eb5515bf844c01b]
Former-commit-id: bef9d6015c2ee164b3576b2a674227155cca6e12
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine