Add timestamp to the signature
Add timestamp to the signature

Otherwise jarsigner -verify complains about the lack of timestamp

Jochen-A-Fuerbacher/jenkins,wuwen5/jenkins,jenkinsci/jenkins,aldaris/jenkins,olivergondza/jenkins,Ykus/jenkins,ndeloof/jenkins,wuwen5/jenkins,jenkinsci/jenkins,recena/jenkins,godfath3r/jenkins,evernat/jenkins,v1v/jenkins,christ66/jenkins,alvarolobato/jenkins,aldaris/jenkins,godfath3r/jenkins,kohsuke/hudson,Jochen-A-Fuerbacher/jenkins,v1v/jenkins,samatdav/jenkins,Jochen-A-Fuerbacher/jenkins,v1v/jenkins,viqueen/jenkins,jglick/jenkins,wuwen5/jenkins,oleg-nenashev/jenkins,oleg-nenashev/jenkins,jpbriend/jenkins,damianszczepanik/jenkins,patbos/jenkins,vjuranek/jenkins,MarkEWaite/jenkins,amuniz/jenkins,rlugojr/jenkins,lilyJi/jenkins,MarkEWaite/jenkins,jpbriend/jenkins,olivergondza/jenkins,batmat/jenkins,jglick/jenkins,samatdav/jenkins,kohsuke/hudson,SebastienGllmt/jenkins,rsandell/jenkins,ikedam/jenkins,recena/jenkins,dennisjlee/jenkins,Jimilian/jenkins,escoem/jenkins,dariver/jenkins,jenkinsci/jenkins,vjuranek/jenkins,Jimilian/jenkins,pjanouse/jenkins,tangkun75/jenkins,FarmGeek4Life/jenkins,ikedam/jenkins,gitaccountforprashant/gittest,Ykus/jenkins,ydubreuil/jenkins,recena/jenkins,andresrc/jenkins,dariver/jenkins,amuniz/jenkins,sathiya-mit/jenkins,rsandell/jenkins,dariver/jenkins,bkmeneguello/jenkins,olivergondza/jenkins,ndeloof/jenkins,stephenc/jenkins,MichaelPranovich/jenkins_sc,tangkun75/jenkins,gitaccountforprashant/gittest,azweb76/jenkins,samatdav/jenkins,ydubreuil/jenkins,fbelzunc/jenkins,tfennelly/jenkins,Vlatombe/jenkins,evernat/jenkins,aldaris/jenkins,lilyJi/jenkins,recena/jenkins,fbelzunc/jenkins,batmat/jenkins,ydubreuil/jenkins,vjuranek/jenkins,stephenc/jenkins,lilyJi/jenkins,jpbriend/jenkins,protazy/jenkins,batmat/jenkins,ikedam/jenkins,MarkEWaite/jenkins,FarmGeek4Life/jenkins,bkmeneguello/jenkins,rlugojr/jenkins,pjanouse/jenkins,recena/jenkins,gitaccountforprashant/gittest,DanielWeber/jenkins,oleg-nenashev/jenkins,pjanouse/jenkins,dariver/jenkins,rlugojr/jenkins,batmat/jenkins,evernat/jenkins,kohsuke/hudson,hplatou/jenkins,protazy/jenkins,MarkEWaite/jenkins,SebastienGllmt/jenkins,jenkinsci/jenkins,protazy/jenkins,ndeloof/jenkins,jenkinsci/jenkins,azweb76/jenkins,ikedam/jenkins,amuniz/jenkins,MichaelPranovich/jenkins_sc,tangkun75/jenkins,protazy/jenkins,bpzhang/jenkins,damianszczepanik/jenkins,batmat/jenkins,Jochen-A-Fuerbacher/jenkins,pjanouse/jenkins,Ykus/jenkins,jpbriend/jenkins,godfath3r/jenkins,escoem/jenkins,daniel-beck/jenkins,damianszczepanik/jenkins,aldaris/jenkins,azweb76/jenkins,tfennelly/jenkins,ErikVerheul/jenkins,SebastienGllmt/jenkins,jpbriend/jenkins,jglick/jenkins,damianszczepanik/jenkins,Jochen-A-Fuerbacher/jenkins,kohsuke/hudson,ndeloof/jenkins,godfath3r/jenkins,v1v/jenkins,daniel-beck/jenkins,v1v/jenkins,stephenc/jenkins,Vlatombe/jenkins,bkmeneguello/jenkins,alvarolobato/jenkins,stephenc/jenkins,rsandell/jenkins,protazy/jenkins,bpzhang/jenkins,ikedam/jenkins,varmenise/jenkins,oleg-nenashev/jenkins,MichaelPranovich/jenkins_sc,Jimilian/jenkins,bpzhang/jenkins,Jimilian/jenkins,tangkun75/jenkins,tfennelly/jenkins,FarmGeek4Life/jenkins,azweb76/jenkins,Vlatombe/jenkins,FarmGeek4Life/jenkins,jenkinsci/jenkins,dariver/jenkins,FarmGeek4Life/jenkins,DanielWeber/jenkins,stephenc/jenkins,stephenc/jenkins,ajshastri/jenkins,MarkEWaite/jenkins,damianszczepanik/jenkins,kohsuke/hudson,dariver/jenkins,ydubreuil/jenkins,dennisjlee/jenkins,andresrc/jenkins,NehemiahMi/jenkins,daniel-beck/jenkins,christ66/jenkins,oleg-nenashev/jenkins,MarkEWaite/jenkins,azweb76/jenkins,varmenise/jenkins,DanielWeber/jenkins,lilyJi/jenkins,evernat/jenkins,recena/jenkins,gitaccountforprashant/gittest,Ykus/jenkins,wuwen5/jenkins,Jimilian/jenkins,MarkEWaite/jenkins,gitaccountforprashant/gittest,aldaris/jenkins,ajshastri/jenkins,DanielWeber/jenkins,gitaccountforprashant/gittest,patbos/jenkins,christ66/jenkins,Jimilian/jenkins,sathiya-mit/jenkins,evernat/jenkins,lilyJi/jenkins,alvarolobato/jenkins,jglick/jenkins,evernat/jenkins,SebastienGllmt/jenkins,ErikVerheul/jenkins,tfennelly/jenkins,bpzhang/jenkins,hplatou/jenkins,vjuranek/jenkins,daniel-beck/jenkins,patbos/jenkins,kohsuke/hudson,bpzhang/jenkins,batmat/jenkins,aldaris/jenkins,tangkun75/jenkins,ikedam/jenkins,olivergondza/jenkins,pjanouse/jenkins,MichaelPranovich/jenkins_sc,rsandell/jenkins,MichaelPranovich/jenkins_sc,samatdav/jenkins,escoem/jenkins,Ykus/jenkins,aldaris/jenkins,dennisjlee/jenkins,fbelzunc/jenkins,ajshastri/jenkins,amuniz/jenkins,Vlatombe/jenkins,tangkun75/jenkins,viqueen/jenkins,lilyJi/jenkins,hplatou/jenkins,Jochen-A-Fuerbacher/jenkins,patbos/jenkins,patbos/jenkins,damianszczepanik/jenkins,ajshastri/jenkins,kohsuke/hudson,rlugojr/jenkins,rsandell/jenkins,andresrc/jenkins,ajshastri/jenkins,andresrc/jenkins,varmenise/jenkins,sathiya-mit/jenkins,ydubreuil/jenkins,olivergondza/jenkins,dennisjlee/jenkins,alvarolobato/jenkins,bkmeneguello/jenkins,daniel-beck/jenkins,sathiya-mit/jenkins,ikedam/jenkins,v1v/jenkins,batmat/jenkins,patbos/jenkins,christ66/jenkins,bpzhang/jenkins,daniel-beck/jenkins,rsandell/jenkins,rsandell/jenkins,escoem/jenkins,wuwen5/jenkins,oleg-nenashev/jenkins,vjuranek/jenkins,protazy/jenkins,alvarolobato/jenkins,viqueen/jenkins,fbelzunc/jenkins,MarkEWaite/jenkins,Jochen-A-Fuerbacher/jenkins,wuwen5/jenkins,vjuranek/jenkins,varmenise/jenkins,Vlatombe/jenkins,christ66/jenkins,alvarolobato/jenkins,pjanouse/jenkins,dennisjlee/jenkins,NehemiahMi/jenkins,samatdav/jenkins,andresrc/jenkins,varmenise/jenkins,samatdav/jenkins,olivergondza/jenkins,SebastienGllmt/jenkins,damianszczepanik/jenkins,FarmGeek4Life/jenkins,bkmeneguello/jenkins,azweb76/jenkins,viqueen/jenkins,gitaccountforprashant/gittest,jglick/jenkins,amuniz/jenkins,v1v/jenkins,SebastienGllmt/jenkins,godfath3r/jenkins,hplatou/jenkins,amuniz/jenkins,damianszczepanik/jenkins,NehemiahMi/jenkins,oleg-nenashev/jenkins,MichaelPranovich/jenkins_sc,escoem/jenkins,protazy/jenkins,Ykus/jenkins,hplatou/jenkins,azweb76/jenkins,tfennelly/jenkins,rsandell/jenkins,ErikVerheul/jenkins,christ66/jenkins,DanielWeber/jenkins,SebastienGllmt/jenkins,daniel-beck/jenkins,sathiya-mit/jenkins,dennisjlee/jenkins,kohsuke/hudson,ndeloof/jenkins,hplatou/jenkins,sathiya-mit/jenkins,DanielWeber/jenkins,godfath3r/jenkins,tfennelly/jenkins,Jimilian/jenkins,amuniz/jenkins,Vlatombe/jenkins,bkmeneguello/jenkins,andresrc/jenkins,jpbriend/jenkins,jpbriend/jenkins,fbelzunc/jenkins,varmenise/jenkins,ErikVerheul/jenkins,NehemiahMi/jenkins,jglick/jenkins,MichaelPranovich/jenkins_sc,ErikVerheul/jenkins,stephenc/jenkins,patbos/jenkins,ErikVerheul/jenkins,sathiya-mit/jenkins,varmenise/jenkins,samatdav/jenkins,rlugojr/jenkins,ikedam/jenkins,recena/jenkins,ndeloof/jenkins,escoem/jenkins,ndeloof/jenkins,bpzhang/jenkins,lilyJi/jenkins,andresrc/jenkins,tfennelly/jenkins,rlugojr/jenkins,fbelzunc/jenkins,ajshastri/jenkins,pjanouse/jenkins,DanielWeber/jenkins,dennisjlee/jenkins,ydubreuil/jenkins,NehemiahMi/jenkins,fbelzunc/jenkins,vjuranek/jenkins,Ykus/jenkins,ydubreuil/jenkins,jenkinsci/jenkins,godfath3r/jenkins,NehemiahMi/jenkins,evernat/jenkins,jglick/jenkins,christ66/jenkins,bkmeneguello/jenkins,hplatou/jenkins,viqueen/jenkins,NehemiahMi/jenkins,viqueen/jenkins,olivergondza/jenkins,ajshastri/jenkins,tangkun75/jenkins,FarmGeek4Life/jenkins,viqueen/jenkins,daniel-beck/jenkins,ErikVerheul/jenkins,alvarolobato/jenkins,jenkinsci/jenkins,escoem/jenkins,Vlatombe/jenkins,wuwen5/jenkins,rlugojr/jenkins,dariver/jenkins