[frontend] add migration to enable mageia chroots

frontend/coprs_frontend/alembic/versions/3341bf554454_add_mageia_chroots.py

@@ -0,0 +1,43 @@
+"""add mageia chroots
+
+Revision ID: 3341bf554454
+Revises: 8de41eec1d1
+Create Date: 2016-09-20 19:28:16.115630
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '3341bf554454'
+down_revision = '8de41eec1d1'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    bind = op.get_bind()
+    connection = bind.connect()
+
+    connection.execute(
+        "INSERT INTO mock_chroot(os_release, os_version, arch, is_active) VALUES ('mageia', '6', 'x86_64', True)"
+    )
+    connection.execute(
+        "INSERT INTO mock_chroot(os_release, os_version, arch, is_active) VALUES ('mageia', '6', 'i586', True)"
+    )
+    connection.execute(
+        "INSERT INTO mock_chroot(os_release, os_version, arch, is_active) VALUES ('mageia', 'cauldron', 'x86_64', True)"
+    )
+    connection.execute(
+        "INSERT INTO mock_chroot(os_release, os_version, arch, is_active) VALUES ('mageia', 'cauldron', 'i586', True)"
+    )
+    connection.close()
+
+
+def downgrade():
+    bind = op.get_bind()
+    connection = bind.connect()
+
+    connection.execute( # there might be already referencing records so just set is_active to False instead of removing
+        "UPDATE mock_chroot SET is_active=False WHERE os_release = 'mageia'"
+    )
+    connection.close()