Update proto commit (#2383)

proto @ c91b65dd

-Subproject commit b66fa070fd647662f06497e4ed3657eb258cb6e9
+Subproject commit c91b65dd8fac2c5866d79834ae73c3c445ce11cf

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/jvm/cpu/CPUMetricAccessor.java

@@ -19,6 +19,7 @@
 
 package org.apache.skywalking.apm.agent.core.jvm.cpu;
 
+import org.apache.skywalking.apm.network.common.CPU;
 import org.apache.skywalking.apm.network.language.agent.*;
 
 /**

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/jvm/cpu/CPUProvider.java

@@ -22,6 +22,7 @@ package org.apache.skywalking.apm.agent.core.jvm.cpu;
 import org.apache.skywalking.apm.agent.core.logging.api.ILog;
 import org.apache.skywalking.apm.agent.core.logging.api.LogManager;
 import org.apache.skywalking.apm.agent.core.os.ProcessorUtil;
+import org.apache.skywalking.apm.network.common.CPU;
 import org.apache.skywalking.apm.network.language.agent.*;
 
 /**

oap-server/server-receiver-plugin/skywalking-jvm-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/jvm/provider/handler/JVMSourceDispatcher.java

@@ -19,6 +19,7 @@
 package org.apache.skywalking.oap.server.receiver.jvm.provider.handler;
 
 import java.util.List;
+import org.apache.skywalking.apm.network.common.CPU;
 import org.apache.skywalking.apm.network.language.agent.*;
 import org.apache.skywalking.oap.server.core.*;
 import org.apache.skywalking.oap.server.core.cache.ServiceInstanceInventoryCache;

oap-server/server-receiver-plugin/skywalking-jvm-receiver-plugin/src/test/java/org/apache/skywalking/oap/server/receiver/jvm/provider/handler/JVMMetricsServiceHandlerMainTest.java

@@ -20,6 +20,7 @@ package org.apache.skywalking.oap.server.receiver.jvm.provider.handler;
 
 import io.grpc.*;
 import java.util.concurrent.*;
+import org.apache.skywalking.apm.network.common.CPU;
 import org.apache.skywalking.apm.network.language.agent.*;
 
 /**