Bring apache sso config up to the latest requirements.

Standardize on crt path provided by sso package.
Fix random error messages thrown by sso module.

BUG=chromium:241614
TEST=Tested deployed version.

Change-Id: I5fe1559323ab5e295fa62a2cffd7654b3865ecf2
Reviewed-on: https://gerrit.chromium.org/gerrit/51573
Tested-by: Scott Zawalski <scottz@chromium.org>
Reviewed-by: Richard Barnette <jrbarnette@chromium.org>
Commit-Queue: Scott Zawalski <scottz@chromium.org>
Reviewed-by: Scott Zawalski <scottz@chromium.org>
1 file changed