lxc testing environment: apt-get update and upgrade as first thing to do
lxc testing environment: apt-get update and upgrade as first thing to do


Former-commit-id: 7cdaaea2fd03c556c9ff68d05bff5a2d8c2a65f7
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine