remove old FIXME
Refactored system template specs

Test now uses factory girl. Also make use of let helper instead of
before each which is lazy evalued. Clean lazy attributes from Repo that
are not used anymore after Pulp v2 migration.
Merge pull request #1673 from ares/tdd/system_templates_specs

TDD: Refactored system template specs
add more ruby193 packages
add ruby193-rubygem-rack-ssl to comps
Merge pull request #1669 from pitr-ch/tdd/remove_old_fixme

TDD remove old FIXME