Improve nuxeo/nuxeo build pipeline

Following latest builds of nuxeo/nuxeo, we saw some improvements that need to be done:

• Make the textFinder fails the build, currently it makes it unstable
• Do not make the build unstable if al tests are successful in the second retry
• Rework all the post failure to post unsuccessful to make sure GitHub statuses are always set.

Update also the nuxeo/nuxeo-jsf-ui one.