Use posix standard for language and time in ssh
Use posix standard for language and time in ssh

 - set "C" instead of empty value (unset)

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