Remove sid source from debian, was only needed for jdk8

 - Added debug in testing
 - Propagate the $DEBUG env from docker to test scripts
 - Be verbose when a pipeline errors that not all tests would have been run
 - add timeout to each cell stage (scripts on a node can hang and the only alternative was to abort the whole pipeline)

 patch by Mick Semb Wever; reviewed by Ekaterina Dimitrova, Brandon Williams for CASSANDRA-19708
5 files changed