upgrade log4j to version 2.17.0 (#89)

diff --git a/hugegraph-common/pom.xml b/hugegraph-common/pom.xml
index 0ddd612..1092890 100644
--- a/hugegraph-common/pom.xml
+++ b/hugegraph-common/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>com.baidu.hugegraph</groupId>
         <artifactId>hugegraph-commons</artifactId>
-        <version>2.0.0</version>
+        <version>2.0.1</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
@@ -231,7 +231,7 @@
                         <manifestEntries>
                             <!-- Must be on one line, otherwise the automatic
                                  upgrade script cannot replace the version number -->
-                            <Implementation-Version>2.0.0.0</Implementation-Version>
+                            <Implementation-Version>2.0.1.0</Implementation-Version>
                         </manifestEntries>
                     </archive>
                 </configuration>
diff --git a/hugegraph-common/src/main/java/com/baidu/hugegraph/version/CommonVersion.java b/hugegraph-common/src/main/java/com/baidu/hugegraph/version/CommonVersion.java
index ac91e09..32e2025 100644
--- a/hugegraph-common/src/main/java/com/baidu/hugegraph/version/CommonVersion.java
+++ b/hugegraph-common/src/main/java/com/baidu/hugegraph/version/CommonVersion.java
@@ -27,5 +27,5 @@
 
     // The second parameter of Version.of() is for all-in-one JAR
     public static final Version VERSION = Version.of(CommonVersion.class,
-                                                     "2.0.0");
+                                                     "2.0.1");
 }
diff --git a/hugegraph-rpc/pom.xml b/hugegraph-rpc/pom.xml
index 8fca5a4..07c2522 100644
--- a/hugegraph-rpc/pom.xml
+++ b/hugegraph-rpc/pom.xml
@@ -6,12 +6,12 @@
     <parent>
         <groupId>com.baidu.hugegraph</groupId>
         <artifactId>hugegraph-commons</artifactId>
-        <version>2.0.0</version>
+        <version>2.0.1</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
     <artifactId>hugegraph-rpc</artifactId>
-    <version>2.0.0</version>
+    <version>2.0.1</version>
 
     <name>hugegraph-rpc</name>
     <description>HugeGraph Database RPC component</description>
@@ -25,7 +25,7 @@
         <dependency>
             <groupId>com.baidu.hugegraph</groupId>
             <artifactId>hugegraph-common</artifactId>
-            <version>2.0.0</version>
+            <version>2.0.1</version>
         </dependency>
 
         <!-- sofa rpc -->
@@ -144,7 +144,7 @@
                         <manifestEntries>
                             <!-- Must be on one line, otherwise the automatic
                                  upgrade script cannot replace the version number -->
-                            <Implementation-Version>2.0.0.0</Implementation-Version>
+                            <Implementation-Version>2.0.1.0</Implementation-Version>
                         </manifestEntries>
                     </archive>
                 </configuration>
diff --git a/hugegraph-rpc/src/main/java/com/baidu/hugegraph/version/RpcVersion.java b/hugegraph-rpc/src/main/java/com/baidu/hugegraph/version/RpcVersion.java
index e192c6c..c9992cc 100644
--- a/hugegraph-rpc/src/main/java/com/baidu/hugegraph/version/RpcVersion.java
+++ b/hugegraph-rpc/src/main/java/com/baidu/hugegraph/version/RpcVersion.java
@@ -27,5 +27,5 @@
 
     // The second parameter of Version.of() is for all-in-one JAR
     public static final Version VERSION = Version.of(RpcVersion.class,
-                                                     "2.0.0");
+                                                     "2.0.1");
 }
diff --git a/pom.xml b/pom.xml
index 717e0bb..9e3c345 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>com.baidu.hugegraph</groupId>
     <artifactId>hugegraph-commons</artifactId>
-    <version>2.0.0</version>
+    <version>2.0.1</version>
     <packaging>pom</packaging>
 
     <name>hugegraph-commons</name>
@@ -57,7 +57,7 @@
         <top.level.dir>${project.basedir}/..</top.level.dir>
         <compiler.source>1.8</compiler.source>
         <compiler.target>1.8</compiler.target>
-        <log4j2.version>2.16.0</log4j2.version>
+        <log4j2.version>2.17.0</log4j2.version>
         <commons.configuration.version>1.10</commons.configuration.version>
         <commons.configuration2.version>2.1.1</commons.configuration2.version>
         <commons.collections.version>3.2.2</commons.collections.version>
@@ -135,7 +135,7 @@
                         <manifestEntries>
                             <!-- Must be on one line, otherwise the automatic
                                  upgrade script cannot replace the version number -->
-                            <Implementation-Version>2.0.0.0</Implementation-Version>
+                            <Implementation-Version>2.0.1.0</Implementation-Version>
                         </manifestEntries>
                     </archive>
                 </configuration>