luci-app-olsr-services: Don't use the nameservice with a specific version.

The "Services" menu option of olsr on the top of the web interface
is not there.

A specific version of the App name was in the controller service
Removing the limitation will fix the problem

https://github.com/freifunk-berlin/firmware/issues/594

Signed-off-by: mmouselli <m.mouselli@syseleven.de>