[SECURITY-506] Require admin permission to validate proxy config.
[SECURITY-506] Require admin permission to validate proxy config.

kohsuke/hudson,batmat/jenkins,patbos/jenkins,batmat/jenkins,Jochen-A-Fuerbacher/jenkins,pjanouse/jenkins,MarkEWaite/jenkins,DanielWeber/jenkins,patbos/jenkins,v1v/jenkins,damianszczepanik/jenkins,v1v/jenkins,amuniz/jenkins,jenkinsci/jenkins,patbos/jenkins,viqueen/jenkins,aldaris/jenkins,ikedam/jenkins,patbos/jenkins,recena/jenkins,ikedam/jenkins,aldaris/jenkins,bkmeneguello/jenkins,daniel-beck/jenkins,ikedam/jenkins,Jochen-A-Fuerbacher/jenkins,daniel-beck/jenkins,ikedam/jenkins,kohsuke/hudson,rsandell/jenkins,rsandell/jenkins,oleg-nenashev/jenkins,amuniz/jenkins,daniel-beck/jenkins,andresrc/jenkins,aldaris/jenkins,andresrc/jenkins,Jochen-A-Fuerbacher/jenkins,kohsuke/hudson,ErikVerheul/jenkins,kohsuke/hudson,rsandell/jenkins,recena/jenkins,MarkEWaite/jenkins,pjanouse/jenkins,viqueen/jenkins,jenkinsci/jenkins,Jochen-A-Fuerbacher/jenkins,dariver/jenkins,ikedam/jenkins,sathiya-mit/jenkins,viqueen/jenkins,bkmeneguello/jenkins,stephenc/jenkins,godfath3r/jenkins,viqueen/jenkins,andresrc/jenkins,dariver/jenkins,rsandell/jenkins,jenkinsci/jenkins,oleg-nenashev/jenkins,Vlatombe/jenkins,ikedam/jenkins,sathiya-mit/jenkins,rsandell/jenkins,MarkEWaite/jenkins,MarkEWaite/jenkins,Vlatombe/jenkins,daniel-beck/jenkins,MarkEWaite/jenkins,v1v/jenkins,damianszczepanik/jenkins,amuniz/jenkins,godfath3r/jenkins,damianszczepanik/jenkins,rsandell/jenkins,Jochen-A-Fuerbacher/jenkins,kohsuke/hudson,Vlatombe/jenkins,DanielWeber/jenkins,pjanouse/jenkins,stephenc/jenkins,pjanouse/jenkins,ErikVerheul/jenkins,recena/jenkins,viqueen/jenkins,DanielWeber/jenkins,amuniz/jenkins,amuniz/jenkins,bkmeneguello/jenkins,oleg-nenashev/jenkins,Vlatombe/jenkins,ErikVerheul/jenkins,batmat/jenkins,dariver/jenkins,damianszczepanik/jenkins,aldaris/jenkins,godfath3r/jenkins,andresrc/jenkins,rsandell/jenkins,sathiya-mit/jenkins,v1v/jenkins,Jochen-A-Fuerbacher/jenkins,aldaris/jenkins,jenkinsci/jenkins,godfath3r/jenkins,daniel-beck/jenkins,aldaris/jenkins,amuniz/jenkins,patbos/jenkins,dariver/jenkins,recena/jenkins,pjanouse/jenkins,ErikVerheul/jenkins,damianszczepanik/jenkins,jenkinsci/jenkins,batmat/jenkins,DanielWeber/jenkins,godfath3r/jenkins,recena/jenkins,MarkEWaite/jenkins,viqueen/jenkins,stephenc/jenkins,damianszczepanik/jenkins,Jochen-A-Fuerbacher/jenkins,Vlatombe/jenkins,daniel-beck/jenkins,viqueen/jenkins,bkmeneguello/jenkins,pjanouse/jenkins,oleg-nenashev/jenkins,oleg-nenashev/jenkins,batmat/jenkins,v1v/jenkins,recena/jenkins,sathiya-mit/jenkins,v1v/jenkins,godfath3r/jenkins,DanielWeber/jenkins,stephenc/jenkins,damianszczepanik/jenkins,batmat/jenkins,patbos/jenkins,patbos/jenkins,v1v/jenkins,daniel-beck/jenkins,andresrc/jenkins,stephenc/jenkins,Vlatombe/jenkins,dariver/jenkins,ErikVerheul/jenkins,batmat/jenkins,MarkEWaite/jenkins,stephenc/jenkins,Vlatombe/jenkins,recena/jenkins,ErikVerheul/jenkins,sathiya-mit/jenkins,kohsuke/hudson,bkmeneguello/jenkins,aldaris/jenkins,sathiya-mit/jenkins,oleg-nenashev/jenkins,jenkinsci/jenkins,ikedam/jenkins,kohsuke/hudson,pjanouse/jenkins,jenkinsci/jenkins,andresrc/jenkins,amuniz/jenkins,rsandell/jenkins,MarkEWaite/jenkins,daniel-beck/jenkins,ikedam/jenkins,bkmeneguello/jenkins,dariver/jenkins,stephenc/jenkins,ErikVerheul/jenkins,sathiya-mit/jenkins,bkmeneguello/jenkins,damianszczepanik/jenkins,dariver/jenkins,DanielWeber/jenkins,DanielWeber/jenkins,godfath3r/jenkins,andresrc/jenkins,oleg-nenashev/jenkins,jenkinsci/jenkins,kohsuke/hudson