provision: Run generate_secrets earlier.
provision: Run generate_secrets earlier.

Commit 7d12e2019de5bc2311ea8b1060ff917f8aa5c7c2 (#10994) broke fresh
provisions by importing zproject.settings before we were done
modifying settings.  Fix it by moving the generate_secrets invocation
to the earliest reasonable place.

Signed-off-by: Anders Kaseorg <087231934ba8fcf78bc142ce37d193b895ac03c4@mit.edu>

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