Next step jenkinsfile (#25622)
Next step jenkinsfile (#25622)

* Adding timestamper and evaluation of test results even in case of failure

* Adding build timeout

* use fixed value 120 minutes as timeout for each test executing for now

* Terminate the build as soon as test execution fails

* Adjust external testing as well

* Finalize use of executeAndReport

owncloud/core,owncloud/core,pollopolea/core,owncloud/core,IljaN/core,owncloud/core,owncloud/core,sharidas/core,sharidas/core,pollopolea/core,IljaN/core,pollopolea/core,IljaN/core,IljaN/core,sharidas/core,IljaN/core,pollopolea/core,phil-davis/core,sharidas/core,sharidas/core,pollopolea/core