I suggest you to compose the URL from the parameters in the very pom. Example:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.8</version>
<executions>
<execution>
<id>deploy-message</id>
<phase>deploy</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<tasks>
<echo>deploying to url=${project.distributionManagement.repository.url}/${project.groupId}/${project.artifactId}/${project.version}/${project.artifactId}-${project.version}.jar</echo>
</tasks>
</configuration>
</execution>
</executions>
</plugin>
(This message will appear at the same time the deploy is being performed, but you can set it to whatever phase you want. Or include it into a Maven profile.)