Migrate apache commons lang v2 usages to v3 for events-rabbitmq

Change-Id: I94c9f682a97fb86198b82b9846931fcd0e23036b

BUILD

diff --git a/BUILD b/BUILD
index 4bccd54..3d02100 100644
--- a/BUILD
+++ b/BUILD
@@ -14,7 +14,7 @@
         "@amqp_client//jar",
         "@commons-codec//jar:neverlink",
         "@commons-io//jar",
-        "@commons-lang//jar:neverlink",
+        "@commons-lang3//jar:neverlink",
         "@gson//jar:neverlink",
     ],
 )

src/main/java/com/googlesource/gerrit/plugins/rabbitmq/session/type/AMQPSession.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/rabbitmq/session/type/AMQPSession.java b/src/main/java/com/googlesource/gerrit/plugins/rabbitmq/session/type/AMQPSession.java
index 1d3c4f0..cc58b3c 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/rabbitmq/session/type/AMQPSession.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/rabbitmq/session/type/AMQPSession.java
@@ -34,7 +34,7 @@
 import java.util.concurrent.TimeoutException;
 import java.util.concurrent.atomic.AtomicInteger;
 import org.apache.commons.codec.CharEncoding;
-import org.apache.commons.lang.StringUtils;
+import org.apache.commons.lang3.StringUtils;
 
 public final class AMQPSession implements Session {
   private static final FluentLogger logger = FluentLogger.forEnclosingClass();