packaging: setup: reorg the per component directory

rename:
reports/reportsconfig.py.in -> reports/config.py.in
reports/reportsconstants.py -> reports/constants.py

Change-Id: I9bf1f33f357c554990d9a19d21c4241ca9e6176d
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>