WS-2639 Modified annihilator to run on spools in multiple areas

A few changes were needed to clean up both the DSOC and NAASC areas:

• 2 new columns were added to the workflow_requests table and a change to the cleaned column's definition:
  • num_to_clean - integer (default 0) - number of areas that need cleaned, incremented each time a workflow adds spool directories to its workflow args
  • num_cleaned - integer (default 0) - number of areas that have been annihilated, incremented every time annihilator cleans a spool directory
  • cleaned - now a computed boolean column which is true when num_to_clean <= num_cleaned (less than is added just in case)
• Annihilator now has a flag to only clean from the spool area (to be used in the NAASC cron)
• Pexes are now deployed to NAASC at /lustre/naasc/web/almapipe/pipeline/naasc-<profile>/workspaces/sbin/