packager.sh: create a file if not exists before grep on it
packager.sh: create a file if not exists before grep on it


Former-commit-id: 4ba8af585adea9081aed77b657e7b0e4a8b8262b [formerly 4ba8af585adea9081aed77b657e7b0e4a8b8262b [formerly 85cb492666d466e1c26ac2064048e7c81ea70cc0]]
Former-commit-id: 594b97329a6ed52b8204dcefaa6bd2f9a7c21563
Former-commit-id: 5f003147dfc59b9e6d23608b0d253161ebc08898
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine