Move hipe shift scripts to this project
Resolve #2 (closed), #7 (closed) and #8 (closed)
- refactor scripts (again, yes), improves config submodule and adds some extra tests
- remove redundant test (I was checking that a file/dir was existing and later checking if it was a file or a dir - that it is implicit in the method).
Thus https://gitlab.in2p3.fr/CTA-LAPP/rta/HiPeShiftScript can be archived.