Move/cleanup old and outdated "baseline" directories

There are several outdated (6-24+ month old) deployment tools and use-cases present in the comparison directory. The idea is to clean up anything that isn't relevant, initially by moving it to a different folder, e.g. "icebox", and later removing anything that we are sure is no longer needed.

Focus is on the following directories:
https://github.com/cncf/cnf-testbed/tree/master/comparison/baseline_nf_performance-packet
https://github.com/cncf/cnf-testbed/tree/master/comparison/baseline_nf_performance-csit

A lot of content exist in both directories (some duplicated, other with minor modifications). Initially it would be good to merge the content. Then once we have a view of what is there, we can start updating anything relevant and remove everything else.

Tasks (to be handled through PRs):
- [ ] Merge content of directories listed above (packet/csit), likely in new directory.
- [ ] Delete parts that we are sure is no longer needed
- [ ] Update remaining parts to be in line with current content of CNF Testbed