$> mettleci datastage cleanup-projects [options]
    \
   Options:
        * -domain
             Services Tier (required)
        * -password
             Password (required)
        * -pattern
             Search pattern for existing projects, sorted in natural order
             (required)
          -retain
             Number of projects matching the search pattern to be retained,
             counting backwards from the end (optional)
             Default: 0
        * -server
             Engine Tier (required)
        * -username
             User Name (required)

eg:
$> command-shell.sh datastage cleanup-projects -domain test2-svcs.datamigrators.io:59445 -username isadmin -password isadminpwd -server test2-engn.datamigrators.io-domain my-services.datamigrators.io:59445 \
   -username isadmin \
   -password isadminpwd \
   -server my-engine.datamigrators.io \
   -pattern Test[0-9] \
   -retain 1
Listing projects:
  - ANALYZERPROJECT
  - DataClick
  - dfd_test
  - dstage1
  - Test1
    - matches pattern
  - Test2
    - matches pattern
  - Test4
    - matches pattern
  - SWPensionStrategy
  - wwi_prod
Cleaning up old projects, retaining 1 most recent projects
 * Delete 'test2-engn.datamigrators.io/Test4' - SKIPPED
Deleting project: SNTest2
 * Delete 'test2-engn.datamigrators.io/Test2' - COMPLETED
Deleting project: SNTest1
 * Delete 'test2-engn.datamigrators.io/Test1' - COMPLETED