Overcloud deployment fails increasing number of IPs into NovaComputeIPs tables

Issue

• When adding more IPs into NovaComputeIPs (for predictables IPs feature) the deployment fails with error Property error: resources.NetworkConfig.properties: Property ControlPlaneDefaultRoute not assigned.

• Error logs seen during deployment:

2017-03-22 13:47:02.851 5076 ERROR oslo_db.sqlalchemy.exc_filters DataError: (1406, u"Data too long for column 'variables' at row 1")
2017-03-22 13:47:02.851 5076 ERROR oslo_db.sqlalchemy.exc_filters
2017-03-22 13:47:02.878 5076 ERROR wsme.api [-] Server-side error: "(pymysql.err.DataError) (1406, u"Data too long for column 'variables' at row 1") [SQL: u'UPDATE environments_v2 SET updated_at=%s, variables=%s WHERE environments_v2.id = %s'] [parameters: (datetime.datetime(2017, 3, 22, 13, 47, 2, 844733),