Fix serviceconfig default example to work with proxy
Fix serviceconfig default example to work with proxy

xiaolanz/mixer,istio/old_mixer_repo,ZackButcher/mixer,douglas-reid/mixer,guptasu/mixer,istio/old_mixer_repo,guptasu/mixer,jmuk/mixer,xiaolanz/mixer,rkpagadala/mixer,ZackButcher/mixer,guptasu/mixer,douglas-reid/mixer,jmuk/mixer,rkpagadala/mixer,rkpagadala/mixer,ZackButcher/mixer,douglas-reid/mixer,xiaolanz/mixer,istio/old_mixer_repo,jmuk/mixer