Add rabbitmq slack alert for ci
Add rabbitmq slack alert for ci

[#118372739]

Signed-off-by: Ben Chapman <4ada7eac694dcb4b5475ac51d142ba919b54bb00@pivotal.io>

pivotal-cf/cf-rabbitmq-release,pivotal-cf/cf-rabbitmq-release,pivotal-cf/cf-rabbitmq-release,pivotal-cf/cf-rabbitmq-release