[opensuse-buildservice] little patch for osc rprjresults filter option

Hi there, this is a small patch to enhance the osc rpjresuls status filter option. osc currently accepts only one filter letter.

osc rprjresults -q -s s science

With attached patch you can use as many status letters as you like:

osc rprjresults -q -s "%sBEFfb" science

Regards Werner (werner2101)