Fix jobs losing their parameters on job execution

Sometime (mainly when the job fails) we may loose the the job parameters definition.

But this is also true for other job configuration, such as cron expression. In fact, this affects all configuration contained in the properties element of the job configuration.

The cause comes from the job pipeline which also defines some job properties.

There's an open issue on Jenkins side JENKINS-43758 which is not yet fixed, probably because it is not a good practice to have two sources of truth.

We need to move all these properties to the nuxeo/platform-ci repository.