Add file.encoding JVM args in maven-surefire-plugin to avoid charset problem (#1550)

pom.xml

@@ -272,6 +272,7 @@
                 <configuration>
                     <!-- CircleCI build workaround -->
                     <argLine>@{argLine} -Xms1024m -Xmx2048m</argLine>
+                    <argLine>-Dfile.encoding=UTF-8</argLine>
                     <useSystemClassLoader>false</useSystemClassLoader>
                 </configuration>
             </plugin>