SSH Job SSH Provider - support SSHJ

Desired Behavior

• By default the new data provider SSHJ is not activated, i.e. the data provider JSch is active for compatibility reasons.
• The new data provider can be activated from
  • a job parameter ssh_provider for use with the SSH JITL job
    • e.g.: <param name="ssh_provider" value="SSHJ"/>
  • an environment variable that applies to SSH JITL Job:
    • for JS1: SCHEDULER_VFS_SSH_PROVIDER
  • The values for the job parameter/environment variable are the same (case insensitive)
    • JSCH: activates the previous JSch data provider
    • SSHJ: activates the new SSHJ data provider

Test Instructions

• Use JITL-662-ssh.zip
  • extract the configuration files to the JobScheduler config/live/JITL-662-ssh location
  • configure the connection settings (use SFTP server on Unix) in the config/live/JITL-662-ssh/start,Go.order.xml configuration file
• Test default JSCH Provider
  • start the /JITL-662-ssh/start/Go order and check the ssh jobs functionality and the the ssh jobs output (find SOSSFTPJCraft) of the job chains:
    • /JITL-662-ssh/start: start
    • /JITL-662-ssh/kill_jobs/pids: pids
• Test SSHJ Provider
  • comment out the parameter <param name="ssh_provider" value="sshj"/> in the config/live/JITL-662-ssh/start,Go.order.xml configuration file
  • start the /JITL-662-ssh/start/Go order and check the ssh jobs functionality and the the ssh jobs output (find SOSSFTPSSHJ) of the job chains:
    • /JITL-662-ssh/start: start
    • /JITL-662-ssh/kill_jobs/pids: pids
• Test the environment variable
  • remove (comment) the <param name="ssh_provider" value="sshj"/> parameter
  • configure an environment variable SCHEDULER_VFS_SSH_PROVIDER=SSHJ for all jobs (see How to add environment variables for all jobs)
  • start the /JITL-662-ssh/start/Go order and check the ssh jobs functionality and the the ssh jobs output (find SOSSFTPSSHJ) of the job chains:
    • /JITL-662-ssh/start: start
    • /JITL-662-ssh/kill_jobs/pids: pids