helper script to create random big repositories
wrapper function around make_repo.py
TEST: create a huge repository
simplify make_repo.py
make_huge_repo() in test_functions
TEST: Create a big repository and split it into nested catalogs
big repo creation is more predictable now
merge 525 and 526 to safe some time
Merge pull request #262 from reneme/test_big_repo

TEST: Create Big Repository and Split into Nested Catalogs