puppeteer: Resurrect test_change_password.
puppeteer: Resurrect test_change_password.

353d0f9 removed this test as it was causing alert words test
fail non-deterministically. See 353d0f9's commit message for
some more details.

Rearranging the order to make this test run in the end can
eliminate the non-deterministic failures due to this test.

Because we reset the test database in between test files, we don't
expect there to be any issues with test files running after this.

andersk/zulip,zulip/zulip,rht/zulip,andersk/zulip,zulip/zulip,kou/zulip,andersk/zulip,zulip/zulip,rht/zulip,andersk/zulip,kou/zulip,rht/zulip,andersk/zulip,zulip/zulip,rht/zulip,kou/zulip,rht/zulip,zulip/zulip,kou/zulip,kou/zulip,rht/zulip,andersk/zulip,zulip/zulip,zulip/zulip,kou/zulip,andersk/zulip,kou/zulip,rht/zulip