redhat/openisr.spec: group updates
redhat/openisr.spec: group updates

- create group if necessary
- tell user to add self to group
- add bash completion
- changelog update
cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr