Modification in freeipa gen service
Modification in freeipa gen service

 - skip groups with not defined free ipa name attribute
 - test just definition of attr values, not equality to string 'null'

stavamichal/perun-services,frhrdina/perun-services,CESNET/perun-services,CESNET/perun-services,sustr4/perun-services,sustr4/perun-services,zlamalp/perun-services,stavamichal/perun-services,zlamalp/perun-services,frhrdina/perun-services,sustr4/perun-services,CESNET/perun-services,CESNET/perun-services,frhrdina/perun-services,stavamichal/perun-services,zlamalp/perun-services,sustr4/perun-services,zlamalp/perun-services,stavamichal/perun-services,frhrdina/perun-services