ensure VLASS workflows only run on VLASS nodes

shared/workspaces/alembic/versions/dc83011fcd2f_correct_vlass_wfs_to_use_vlass_nodes.py

+"""correct vlass wfs to use vlass nodes
+
+Revision ID: dc83011fcd2f
+Revises: 4c3bfbdd2984
+Create Date: 2022-10-06 09:58:37.473495
+
+"""
+from alembic import op
+
+
+# revision identifiers, used by Alembic.
+revision = "dc83011fcd2f"
+down_revision = "4c3bfbdd2984"
+branch_labels = None
+depends_on = None
+
+affected_workflows = (
+    "pims_split",
+    "vlass_calibration",
+    "vlass_coarse",
+    "vlass_quicklook",
+    "vlass_seci",
+    "vlass_image_caching",
+)
+
+
+def upgrade():
+    op.execute(
+        f"""
+        UPDATE workflow_templates
+        SET content= regexp_replace(convert_from(content, 'utf-8'),
+         E'requirements = HasLustre == True', 
+         E'requirements = (VLASS == True) && (HasLustre == True)\\n+partition = "VLASS"')::bytea
+        WHERE workflow_name in {str(affected_workflows)} AND filename like ('%.condor')
+        """
+    )
+
+
+def downgrade():
+    op.execute(
+        f"""
+        UPDATE workflow_templates
+        SET content= regexp_replace(convert_from(content, 'utf-8'),
+        E'requirements = (VLASS == True) && (HasLustre == True)\\n+partition = "VLASS"',
+        E'requirements = HasLustre == True')::bytea
+        WHERE workflow_name in {str(affected_workflows)} AND filename like ('%.condor')
+        """
+    )