Django 1.11: Upgrade parallel test runner.
Django 1.11: Upgrade parallel test runner.

In Django 1.11, args argument of run_subsuite function is a tuple of
length 4. The new argument is the test runner class which we do not
need because we run tests using our own version of the test runner.

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