ensure that new column has default, which is needed for postgres (#2038)

Co-authored-by: burnettk <burnettk@users.noreply.github.com>

spiffworkflow-backend/migrations/versions/f318f9f1b110_.py

@@ -19,7 +19,7 @@ depends_on = None
 def upgrade():
     # ### commands auto generated by Alembic - please adjust! ###
     with op.batch_alter_table('group', schema=None) as batch_op:
-        batch_op.add_column(sa.Column('source_is_open_id', sa.Boolean(), nullable=False))
+        batch_op.add_column(sa.Column('source_is_open_id', sa.Boolean(), server_default=sa.text('false'), nullable=False))
         batch_op.create_index(batch_op.f('ix_group_source_is_open_id'), ['source_is_open_id'], unique=False)
 
     with op.batch_alter_table('human_task_user', schema=None) as batch_op:

spiffworkflow-backend/src/spiffworkflow_backend/models/group.py

@@ -4,6 +4,7 @@ from dataclasses import dataclass
 from typing import TYPE_CHECKING
 
 from sqlalchemy.orm import relationship
+from sqlalchemy.sql import false
 
 from spiffworkflow_backend.models.db import SpiffworkflowBaseDBModel
 from spiffworkflow_backend.models.db import db
@@ -30,7 +31,7 @@ class GroupModel(SpiffworkflowBaseDBModel):
     id = db.Column(db.Integer, primary_key=True)
     name: str = db.Column(db.String(255), index=True)
     identifier: str = db.Column(db.String(255), index=True)
-    source_is_open_id: bool = db.Column(db.Boolean, default=False, nullable=False, index=True)
+    source_is_open_id: bool = db.Column(db.Boolean, default=False, server_default=false(), nullable=False, index=True)
 
     user_group_assignments = relationship("UserGroupAssignmentModel", cascade="delete")
     user_group_assignments_waiting = relationship("UserGroupAssignmentWaitingModel", cascade="delete")  # type: ignore