Mail validation event threshold not applied

[vohmar]

Force delete on domains with contacts that have invalid email addresses should not be applied on first validation error to prevent false positives that might appear due to network errors or some temporary issues.

for this there is a variable implemented already
https://github.com/internetee/registry/blob/master/app/models/validation_event.rb

but at this point of time this is not applied and force delete gets set on first validation error