Reduce CERTIFICATE_DELAY_SECONDS from 2 seconds to half a second This was introduced by edX to deal with a race condition with PhotoSecureVerification (https://github.com/openedx/edx-platform/pull/15996) but the delay is actually too long for customers using auto-generated certs on passing grade, leading to visits to the Progress page with no certificate yet available. We do not use PhotoSecureVerification so why don't we just make this shorter?  It's unfortunately not configurable. Upstream, the constant has moved and there's been refactoring of related code, so at this point I just want to override like this.
Reduce CERTIFICATE_DELAY_SECONDS from 2 seconds to half a second
This was introduced by edX to deal with a race condition with
PhotoSecureVerification (https://github.com/openedx/edx-platform/pull/15996)
but the delay is actually too long for customers using auto-generated
certs on passing grade, leading to visits to the Progress
page with no certificate yet available.
We do not use PhotoSecureVerification so why don't we just make this
shorter?  It's unfortunately not configurable.
Upstream, the constant has moved and there's been refactoring of
related code, so at this point I just want to override like this.

appsembler/edx-platform,appsembler/edx-platform,appsembler/edx-platform,appsembler/edx-platform