qrp

Pull request #856: DEV-37409: Exclude DX/PX records from VC combo records

Merge in AD/qrp from DEV-37409 to staging

* commit '385c5526c4036059b9a23a926211c165b5723d66':
  DEV-37409: Move initialization of macro variables, remove initialization from standalone
  DEV-37409: Add where clause to ndc dataset, move CB code extraction
  DEV-37409: Check if covariatecodes file exists
  DEV-37409: Add covariatecodes to CB list, change join type for rx codes, move conditional logic to prevent appending non-required records
  DEV-37409: Remove extra parenthesis
  DEV-37409: Add DX/PX codelist parameters to combo, filter out VC records not in parameter list