submission-scripts: update flux arguments

Tag spark defaults & functionality tests with "pdshlaunch" indicating it is using

Fix test generation error in test-generate-functionality.sh.

Update test validation for when java not configured.

Support Spark 3.4.2, 3.4.3, 3.5.1

remove invalid check in test-validate.sh

Fix incorrect script name in test generation and update

Support Hadoop 3.4.0

Support Spark 3.5.0

Support Spark 3.4.0 and 3.4.1

Support Spark 3.2.4 and 3.3.3

testsuite: handle flux-batch-run type

testsuite: make sbatch-srun default for tests

Support Hadoop 3.3.6

Update NEWS