[Mageia-sysadm] package submit wrapper

[nicolas vigier]

Current version of repsys/mgarepo is running /usr/share/repsys/create-srpm
when submitting a package.

I think it would a good idea instead to use a small wrapper in an other
path, maybe something like /usr/local/bin/submit_package :
 - we can move create-srpm to /usr/share/mgarepo
 - if we want later to use something else than create-srpm, it will be
   easier to do it
 - we can add a check for the user to be in the right group (mga-packagers).
   Currently it is not working only because /home/schedbot/repsys/srpms
   directory is owned by mga-packagers.
 - we can add other checks if needed

What do you think ?