$> mettleci datastage cleanup-projects \
   -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
  - 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