test_settings: Include fake keys for Google/GitHub.
test_settings: Include fake keys for Google/GitHub.

This is necessary for tests the to pass with the new config_error code
path, which we don't want to trigger except on specific tests for
those features.

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