Tables missing a primary key, required for HA with Galera Cluster

Two tables from the sahara scheme are missing a primary key. A primary key is strongly recommended when using Galera Cluster for HA.

 CREATE TABLE `libs_association` (
  `Job_id` varchar(36) DEFAULT NULL,
  `JobBinary_id` varchar(36) DEFAULT NULL,
  KEY `JobBinary_id` (`JobBinary_id`),
  KEY `Job_id` (`Job_id`),
  CONSTRAINT `libs_association_ibfk_1` FOREIGN KEY (`JobBinary_id`) REFERENCES `job_binaries` (`id`),
  CONSTRAINT `libs_association_ibfk_2` FOREIGN KEY (`Job_id`) REFERENCES `jobs` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

CREATE TABLE `mains_association` (
  `Job_id` varchar(36) DEFAULT NULL,
  `JobBinary_id` varchar(36) DEFAULT NULL,
  KEY `JobBinary_id` (`JobBinary_id`),
  KEY `Job_id` (`Job_id`),
  CONSTRAINT `mains_association_ibfk_1` FOREIGN KEY (`JobBinary_id`) REFERENCES `job_binaries` (`id`),
  CONSTRAINT `mains_association_ibfk_2` FOREIGN KEY (`Job_id`) REFERENCES `jobs` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

sahara --version
0.7.3