Add support for metadata on robot accounts

Fixes https://jira.coreos.com/browse/QUAY-847
Fixes https://jira.coreos.com/browse/QUAY-816

data/migrations/versions/b547bc139ad8_add_robotaccountmetadata_table.py

@@ -0,0 +1,35 @@
+"""Add RobotAccountMetadata table
+
+Revision ID: b547bc139ad8
+Revises: 0cf50323c78b
+Create Date: 2018-03-09 15:50:48.298880
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = 'b547bc139ad8'
+down_revision = '0cf50323c78b'
+
+from alembic import op
+import sqlalchemy as sa
+from util.migrate import UTF8CharField
+
+
+def upgrade(tables):
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('robotaccountmetadata',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('robot_account_id', sa.Integer(), nullable=False),
+    sa.Column('description', UTF8CharField(length=255), nullable=False),
+    sa.Column('unstructured_json', sa.Text(), nullable=False),
+    sa.ForeignKeyConstraint(['robot_account_id'], ['user.id'], name=op.f('fk_robotaccountmetadata_robot_account_id_user')),
+    sa.PrimaryKeyConstraint('id', name=op.f('pk_robotaccountmetadata'))
+    )
+    op.create_index('robotaccountmetadata_robot_account_id', 'robotaccountmetadata', ['robot_account_id'], unique=True)
+    # ### end Alembic commands ###
+
+
+def downgrade(tables):
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('robotaccountmetadata')
+    # ### end Alembic commands ###