A note regarding Jenkins and integration test stability

[Tom Zeller]

After changing java-idp-integration-tests today, the relevant Jenkins
job became unstable, unsurprisingly. However, my second manual run of
the Jenkins job passed just fine. My guess is that it is taking too
long to start Jetty and the IdP + testbed, as one of the changes I
made today was to ping the status page to verify that the IdP started.
If the status page is not available in 20s tests fail, so I may need
to increase that timeout.