list vlass cals as possible remote workflows

shared/workspaces/workspaces/system/enums.py

@@ -45,6 +45,7 @@ class RemoteWorkflows(Enum):
     SECI = "vlass_seci"
     CUBE = "vlass_coarse"
     QUICKLOOK = "vlass_quicklook"
+    VLASS_CAL = "vlass_calibration"
     DOWNLOAD = "test_download"  # listed as remote due to ALMA downloads running in CV, but still requires lustre access
     CARTA = "carta"
     STD_CALIBRATION = "std_calibration"