Alembic migration for iSER configuration setting

(cherry picked from commit a9700a9)

src/middlewared/middlewared/alembic/versions/25.04/2025-02-11_22-45_iser.py

@@ -0,0 +1,25 @@
+"""Add iSER configuration setting
+
+Revision ID: 673dd6925aba
+Revises: 287d5bdee5c5
+Create Date: 2025-02-11 22:45:50.021091+00:00
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '673dd6925aba'
+down_revision = '287d5bdee5c5'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    with op.batch_alter_table('services_iscsitargetglobalconfiguration', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('iscsi_iser', sa.Boolean(), nullable=False, server_default='0'))
+
+
+def downgrade():
+    pass