FK: add foreigner to Gemfile
add Gemfile.lock with foreigner
add foreign keys for catalog_entries
add foreign keys for catalogs
add foreign keys to deployables
add foreign keys for pool_families
add foreign keys for pools
add foreign keys for pool_families_provider_accounts
add foreign keys for hardware_profiles
Merge pull request #400 from martinpovolny/fk-part1-round2

foreign keys part one round two