billing: Test that salt and seat_count are set correctly in /upgrade.
billing: Test that salt and seat_count are set correctly in /upgrade.

kou/zulip,synicalsyntax/zulip,synicalsyntax/zulip,eeshangarg/zulip,shubhamdhama/zulip,dhcrzf/zulip,showell/zulip,kou/zulip,rht/zulip,rht/zulip,rishig/zulip,showell/zulip,brainwane/zulip,shubhamdhama/zulip,zulip/zulip,eeshangarg/zulip,zulip/zulip,andersk/zulip,eeshangarg/zulip,jackrzhang/zulip,tommyip/zulip,jackrzhang/zulip,kou/zulip,dhcrzf/zulip,rht/zulip,dhcrzf/zulip,shubhamdhama/zulip,andersk/zulip,zulip/zulip,synicalsyntax/zulip,punchagan/zulip,tommyip/zulip,rishig/zulip,brainwane/zulip,eeshangarg/zulip,synicalsyntax/zulip,punchagan/zulip,rht/zulip,zulip/zulip,hackerkid/zulip,brainwane/zulip,punchagan/zulip,timabbott/zulip,kou/zulip,showell/zulip,brainwane/zulip,dhcrzf/zulip,andersk/zulip,punchagan/zulip,andersk/zulip,eeshangarg/zulip,timabbott/zulip,rht/zulip,jackrzhang/zulip,showell/zulip,andersk/zulip,rht/zulip,showell/zulip,synicalsyntax/zulip,rishig/zulip,brainwane/zulip,hackerkid/zulip,hackerkid/zulip,shubhamdhama/zulip,zulip/zulip,showell/zulip,synicalsyntax/zulip,kou/zulip,shubhamdhama/zulip,timabbott/zulip,zulip/zulip,rht/zulip,kou/zulip,dhcrzf/zulip,tommyip/zulip,jackrzhang/zulip,synicalsyntax/zulip,rishig/zulip,punchagan/zulip,dhcrzf/zulip,timabbott/zulip,tommyip/zulip,jackrzhang/zulip,rishig/zulip,andersk/zulip,brainwane/zulip,timabbott/zulip,jackrzhang/zulip,showell/zulip,punchagan/zulip,hackerkid/zulip,timabbott/zulip,jackrzhang/zulip,hackerkid/zulip,rishig/zulip,andersk/zulip,tommyip/zulip,rishig/zulip,dhcrzf/zulip,timabbott/zulip,hackerkid/zulip,punchagan/zulip,tommyip/zulip,brainwane/zulip,shubhamdhama/zulip,eeshangarg/zulip,tommyip/zulip,kou/zulip,zulip/zulip,eeshangarg/zulip,shubhamdhama/zulip,hackerkid/zulip