add role and perms migrations for authorization

alembic/versions/4ea5917e7781_add_default_atat_role.py

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+"""add_default_atat_role
+
+Revision ID: 4ea5917e7781
+Revises: 96a9f3537996
+Create Date: 2018-07-30 13:51:29.576931
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.orm.session import Session
+
+
+# revision identifiers, used by Alembic.
+revision = '4ea5917e7781'
+down_revision = '96a9f3537996'
+branch_labels = None
+depends_on = None
+
+from atst.models.role import Role
+from atst.models.permissions import Permissions
+
+
+def upgrade():
+    session = Session(bind=op.get_bind())
+    mission_owner_role = Role(
+        name='default',
+        description='',
+        permissions=[
+            Permissions.REQUEST_JEDI_WORKSPACE,
+        ]
+    )
+    session.add(mission_owner_role)
+    session.commit()
+
+
+def downgrade():
+    db = op.get_bind()
+    db.execute("DELETE FROM roles WHERE name = 'default'")
+