packaging: setup: workaround python module wooes

for some reason when python loads a module it consider only short
name of module and ignores the location from which module was loaded,
so it reuses module when trying to load same module short name from
other package.

this cause the following statement in ovirt_engine.py to reuse self
instead of loading correct module:

 from ovirt_engine import util as outil

work around is to rename current module name:

 apache/ovirt_engine.py -> apache/engine.py

Change-Id: I19607ba117d59e310310694648e116d684f9eb2d
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>