Pin nginx container to mozillaiam/mozilla.oidc.accessproxy:8334f96
Pin nginx container to mozillaiam/mozilla.oidc.accessproxy:8334f96

This gets us mozilla-iam/mozilla.oidc.accessproxy#36 which works
around the bug in zmartzone/lua-resty-openidc#249

gdestuynder/MozDef,jeffbryner/MozDef,mozilla/MozDef,Phrozyn/MozDef,gdestuynder/MozDef,jeffbryner/MozDef,Phrozyn/MozDef,gdestuynder/MozDef,jeffbryner/MozDef,mozilla/MozDef,mozilla/MozDef,Phrozyn/MozDef,mpurzynski/MozDef,jeffbryner/MozDef,mpurzynski/MozDef,gdestuynder/MozDef,Phrozyn/MozDef,mozilla/MozDef,mpurzynski/MozDef,mpurzynski/MozDef