packager.sh: add support for skipping slow tests
packager.sh: add support for skipping slow tests

raoanirudh/oq-risklib,gem/oq-engine,g-weatherill/oq-risklib,raoanirudh/oq-risklib,gem/oq-engine,g-weatherill/oq-risklib,vup1120/oq-risklib,gem/oq-engine,vup1120/oq-risklib,gem/oq-engine,g-weatherill/oq-risklib,gem/oq-engine