[minor] in standalone_install.sh ensure proxy isn't used for tests
[minor] in standalone_install.sh ensure proxy isn't used for tests

yvesago/mig,sunnygkp10/mig,zerosign/mig,jvehent/mig,therealkbhat/mig,zerosign/mig,pap/mig,jvehent/mig,therealkbhat/mig,gdestuynder/mig,zerosign/mig,jboyer2012/mig,deathping1994/mig,therealkbhat/mig,mozilla/mig,datachand/mig,pap/mig,mozilla/mig,gdestuynder/mig,pap/mig,jvehent/mig,therealkbhat/mig,datachand/mig,rezen/mig,yvesago/mig,deathping1994/mig,pap/mig,vladimirdiaconescu/mig,mozilla/mig,ameihm0912/mig,sunnygkp10/mig,mvanotti/mig,ameihm0912/mig,rezen/mig,rezen/mig,sunnygkp10/mig,mozilla/mig,rayyang2000/mig,gdestuynder/mig,rezen/mig,sunnygkp10/mig,mozilla/mig,deathping1994/mig,deathping1994/mig,rayyang2000/mig,vladimirdiaconescu/mig,ameihm0912/mig,mvanotti/mig,vladimirdiaconescu/mig,jboyer2012/mig,mvanotti/mig,djmitche/mig,djmitche/mig,yvesago/mig,zerosign/mig,jboyer2012/mig,vladimirdiaconescu/mig,datachand/mig,gdestuynder/mig,rayyang2000/mig,jvehent/mig,datachand/mig,yvesago/mig,jboyer2012/mig,rayyang2000/mig,mvanotti/mig