ZWEGEN00: verify the operation and verbosity

[Martin-Zeithaml]

The ZWEGEN00 logic is checking for nogenerate or noverbose. Everything else is considered as generate or verbose.
This will generate in verbose mode:

//SYSTSIN  DD   *          
ISPSTART CMD(%ZWEGEN00 -   
enerate -               
verdose -                  
)                          

[github-actions]

PAX build 4637 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/8064791380

[github-actions]

Test workflow 4049 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.15.0-PR-3745/zowe-2.15.0-pr-3745-4637-20240227124444.pax
Running on machine: zzow07
Result: FAILURE
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/8064943759