Sanitize file permissions for downloaded files.

Downloaded files may not have read permission for everybody.
This doesn't seem to be a problem since the user as well as
root should be able to read them anyhow. This is true unless
the directory where the cache resides is mounted over nfs
with root_squash.

Signed-off-by: Egbert Eich <eich@suse.de>

osc/fetch.py

@@ -171,6 +171,7 @@ class Fetcher:
             pac_obj.filename = canonname
             pac_obj.fullfilename = fullfilename
         shutil.move(tmpfile, fullfilename)
+        os.chmod(fullfilename, 0644)
 
     def dirSetup(self, pac):
         dir = os.path.join(self.cachedir, pac.localdir)