[autotest] Make autotest setup script put readonly_* into shadow_config.ini

Turns out that, when contacting the TKO database, some code
in autotest uses the readonly_* fields in the config, if present.
Since we set these in global_config.ini, we need to clobber them
in shadow_config.ini when running a local setup.

BUG=None
TEST=manual

Change-Id: I35ff26452fc9d979dc9bdb6a86b7e9cb8beb5909
Reviewed-on: https://gerrit.chromium.org/gerrit/13968
Tested-by: Chris Masone <cmasone@chromium.org>
Reviewed-by: Scott Zawalski <scottz@chromium.org>
Commit-Ready: Chris Masone <cmasone@chromium.org>
1 file changed