Make sure ~/oqdata exists before openquake.server tests
Make sure ~/oqdata exists before openquake.server tests


Former-commit-id: d61d8c2ef0aca9684b3163d643a1f588e4b3d35e [formerly b4e67f74f9463acfd00762df64c0d0f3e5833be4]
Former-commit-id: 182fc8e246e58e9b1ed721b0b7ae6c8c1816df37
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine