[FIXED JENKINS-47181] - Recover the agent protocol handling tests. (#3118)
[FIXED JENKINS-47181] - Recover the agent protocol handling tests. (#3118)

* [FIXED JENKINS-47181] - Recover the agent protocol handling tests.

The protocol handling logic does not longer use bogus assumptions anymore.
Instead of that, there are extra `MockAgentProtocol` instances (to be moved to JTH?)

* Extremely important fix to retrigger the PR builder

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