travis: Update held packages list in production tests.
travis: Update held packages list in production tests.

zulip/zulip,synicalsyntax/zulip,timabbott/zulip,dhcrzf/zulip,synicalsyntax/zulip,brockwhittaker/zulip,zulip/zulip,synicalsyntax/zulip,rht/zulip,vaidap/zulip,vabs22/zulip,vaidap/zulip,rht/zulip,punchagan/zulip,eeshangarg/zulip,brainwane/zulip,brainwane/zulip,tommyip/zulip,mahim97/zulip,dhcrzf/zulip,brockwhittaker/zulip,kou/zulip,timabbott/zulip,verma-varsha/zulip,punchagan/zulip,jackrzhang/zulip,verma-varsha/zulip,jackrzhang/zulip,hackerkid/zulip,Galexrt/zulip,rishig/zulip,brainwane/zulip,andersk/zulip,vaidap/zulip,jackrzhang/zulip,hackerkid/zulip,hackerkid/zulip,andersk/zulip,timabbott/zulip,punchagan/zulip,synicalsyntax/zulip,Galexrt/zulip,punchagan/zulip,rishig/zulip,shubhamdhama/zulip,eeshangarg/zulip,amanharitsh123/zulip,tommyip/zulip,hackerkid/zulip,hackerkid/zulip,shubhamdhama/zulip,jackrzhang/zulip,dhcrzf/zulip,showell/zulip,andersk/zulip,shubhamdhama/zulip,kou/zulip,hackerkid/zulip,mahim97/zulip,eeshangarg/zulip,jrowan/zulip,andersk/zulip,kou/zulip,tommyip/zulip,mahim97/zulip,brockwhittaker/zulip,brainwane/zulip,vaidap/zulip,brockwhittaker/zulip,verma-varsha/zulip,zulip/zulip,zulip/zulip,showell/zulip,dhcrzf/zulip,jackrzhang/zulip,andersk/zulip,kou/zulip,vaidap/zulip,jackrzhang/zulip,rht/zulip,showell/zulip,punchagan/zulip,mahim97/zulip,tommyip/zulip,verma-varsha/zulip,vabs22/zulip,tommyip/zulip,jrowan/zulip,jackrzhang/zulip,punchagan/zulip,amanharitsh123/zulip,mahim97/zulip,Galexrt/zulip,jrowan/zulip,vabs22/zulip,dhcrzf/zulip,brainwane/zulip,vaidap/zulip,andersk/zulip,shubhamdhama/zulip,kou/zulip,rht/zulip,mahim97/zulip,timabbott/zulip,vabs22/zulip,zulip/zulip,shubhamdhama/zulip,vabs22/zulip,eeshangarg/zulip,jrowan/zulip,zulip/zulip,rishig/zulip,tommyip/zulip,brainwane/zulip,verma-varsha/zulip,amanharitsh123/zulip,zulip/zulip,shubhamdhama/zulip,eeshangarg/zulip,synicalsyntax/zulip,kou/zulip,showell/zulip,brockwhittaker/zulip,jrowan/zulip,shubhamdhama/zulip,eeshangarg/zulip,rishig/zulip,kou/zulip,dhcrzf/zulip,brockwhittaker/zulip,Galexrt/zulip,synicalsyntax/zulip,rht/zulip,showell/zulip,hackerkid/zulip,punchagan/zulip,amanharitsh123/zulip,rht/zulip,showell/zulip,brainwane/zulip,amanharitsh123/zulip,timabbott/zulip,rishig/zulip,timabbott/zulip,Galexrt/zulip,Galexrt/zulip,rishig/zulip,vabs22/zulip,jrowan/zulip,eeshangarg/zulip,verma-varsha/zulip,rishig/zulip,tommyip/zulip,Galexrt/zulip,rht/zulip,showell/zulip,andersk/zulip,amanharitsh123/zulip,dhcrzf/zulip,synicalsyntax/zulip,timabbott/zulip