refactor: Tweak args to what_to_do_with_migrations.
refactor: Tweak args to what_to_do_with_migrations.

This is a minor prep commit--we'll move it into
the class next.

timabbott/zulip,andersk/zulip,showell/zulip,eeshangarg/zulip,timabbott/zulip,brainwane/zulip,andersk/zulip,timabbott/zulip,punchagan/zulip,shubhamdhama/zulip,zulip/zulip,andersk/zulip,shubhamdhama/zulip,zulip/zulip,shubhamdhama/zulip,kou/zulip,zulip/zulip,eeshangarg/zulip,hackerkid/zulip,brainwane/zulip,hackerkid/zulip,rht/zulip,synicalsyntax/zulip,showell/zulip,punchagan/zulip,eeshangarg/zulip,punchagan/zulip,showell/zulip,showell/zulip,rht/zulip,timabbott/zulip,rht/zulip,rht/zulip,synicalsyntax/zulip,hackerkid/zulip,synicalsyntax/zulip,andersk/zulip,showell/zulip,punchagan/zulip,synicalsyntax/zulip,zulip/zulip,andersk/zulip,synicalsyntax/zulip,shubhamdhama/zulip,eeshangarg/zulip,kou/zulip,timabbott/zulip,punchagan/zulip,eeshangarg/zulip,shubhamdhama/zulip,rht/zulip,brainwane/zulip,brainwane/zulip,kou/zulip,hackerkid/zulip,synicalsyntax/zulip,shubhamdhama/zulip,hackerkid/zulip,brainwane/zulip,showell/zulip,showell/zulip,punchagan/zulip,timabbott/zulip,brainwane/zulip,hackerkid/zulip,kou/zulip,kou/zulip,zulip/zulip,brainwane/zulip,rht/zulip,kou/zulip,eeshangarg/zulip,zulip/zulip,shubhamdhama/zulip,zulip/zulip,punchagan/zulip,rht/zulip,hackerkid/zulip,andersk/zulip,kou/zulip,andersk/zulip,eeshangarg/zulip,synicalsyntax/zulip,timabbott/zulip