[maven-release-plugin] copy for tag 2.7.1

Ignores empty rabbit URI property

The default is empty and we accidentally interpreted that as a real URI.

Ex: `uri: ${RABBIT_URI:}`

Caused:
```
| Caused by: java.lang.NullPointerException: null
query_1     |     at com.rabbitmq.client.ConnectionFactory.setUri(ConnectionFactory.java:277) ~[amqp-client-4.5.0.jar!/:4.5.0]
query_1     |     at zipkin.autoconfigure.collector.rabbitmq.ZipkinRabbitMQCollectorProperties.toBuilder(ZipkinRabbitMQCollectorProperties.java:132) ~[zipkin-autoconfigure-collector-rabbitmq-2.7.0.jar!/:na]
query_1     |     at zipkin.autoconfigure.collector.rabbitmq.ZipkinRabbitMQCollectorAutoConfiguration.rabbitMq(ZipkinRabbitMQCollectorAutoConfiguration.java:43) ~[zipkin-autoconfigure-collector-rabbitmq-2.7.0.jar!/:na]
query_1     |
```

Thanks @marcingrzejszczak for pointing this out

[maven-release-plugin] copy for tag 2.7.0

Removes scribe from the default jar, as an optional module

This removes scribe and the 2 year abandoned library it uses from the
default server jar. A follow-up change will integrate it conditionally
in the docker image similar to how we integrate kafka10.

[maven-release-plugin] copy for tag 2.6.1

[maven-release-plugin] copy for tag 2.6.0

[maven-release-plugin] copy for tag 2.5.3

[maven-release-plugin] copy for tag 2.5.2

[maven-release-plugin] copy for tag 2.5.1

[maven-release-plugin] copy for tag 2.5.0