CI: Copy product during integration-test phase

... This avoids triggering the copy job twice.

Signed-off-by: Alexander Diewald <diewald@fortiss.org>

pom.xml

@@ -30,7 +30,7 @@
         <executions>
           <execution>
             <id>Copy-test-product</id>
-            <phase>pre-integration-test</phase>
+            <phase>integration-test</phase>
             <goals>
               <goal>run</goal>
             </goals>