suppress maven.surefire warning

assira.common/pom.xml

@@ -129,7 +129,7 @@
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>2.18.1</version>
                 <configuration>
-                    <argLine>@{project.argLine} -Xmx${project.test.memory}</argLine>
+                    <argLine>-Dfile.encoding=${project.build.sourceEncoding} @{project.argLine} -Xmx${project.test.memory}</argLine>
                     <testFailureIgnore>false</testFailureIgnore>
                     <skip>false</skip>
                 </configuration>