disable usage report from Java SDK in unit tests

sdk/java/conf/contract/juicefs.xml

@@ -7,6 +7,10 @@
 		<name>fs.jfs.impl</name>
 		<value>io.juicefs.JuiceFileSystem</value>
 	</property>
+	<property>
+		<name>juicefs.no-usage-report</name>
+		<value>true</value>
+	</property>	
 	<property>
 		<name>juicefs.names</name>
 		<value>a.local,b.local,c.local,d.local,e.local</value>

sdk/java/conf/core-site.xml

@@ -9,6 +9,10 @@
 		<name>fs.jfs.impl</name>
 		<value>io.juicefs.JuiceFileSystem</value>
 	</property>
+	<property>
+		<name>juicefs.no-usage-report</name>
+		<value>true</value>
+	</property>
 	<property>
 		<name>juicefs.file.checksum</name>
 		<value>true</value>